MTA 98-364

Questão 1

Questão

You have the following table definition: CREATE TABLE Road (RoadID INTEGER NOT NULL, Distance INTEGER NOT NULL) The Road table contains the following data: You execute the following statement: INSERT INTO Road VALUES (1234, 36) What is the result?

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Responda

an error stating that NULL values are not allowed
a new row in the table
an error stating that duplicate IDs are not allowed
a syntax error

Questão 2

Questão

A view can be used to:

Responda

Save an extra copy of data stored in a separate table.
Limit access to specific rows or columns of data in a table.
Ensure referential integrity.
Save historical data before deleting it from the base table.

Questão 3

Questão

You are creating a database object named Student to store the following data: Which syntax should you use to create the object? A. CREATE TABLE Student ( ID INT, Name VARCHAR (100), Age INT ) --- B. CREATE ( TABLE Student ID INT, Name VARCHAR(100), Age INT ) --- C. CREATE Student ( ID INT, Name VARCHAR(100), Age INT ) --- D. CREATE TABLE ( ID INT, Name VARCHAR(100), Age INT )

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Responda

Option A
Option B
Option C
Option D

Questão 4

Questão

Which statement deletes the rows where the employee's phone number is not entered?

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Responda

Option A
Option B
Option C
Option D

Questão 5

Questão

You have the following SQL query SELECT * FROM dbo.ProAthlete WHERE Salary > 500000 The query takes too much time to return data. You need to improve the performance of the query. Which item should you add to the Salary column?

Responda

Non-null constraint
Default constraint
Index
Foreign key

Questão 6

Questão

Which two keys establish a relationship between two tables? (Choose two.)

Responda

candidate
foreign
superkey
local
primary

Questão 7

Questão

This question requires that you evaluate the underlined text to determine if it is correct. The UNION keyword combines the results of two queries and returns only rows that appear in both result sets. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct

Responda

No change is needed
INTERSECT
ALL
UOIN

Questão 8

Questão

Your class project requires that you help a charity set up a website. The website collects information about volunteers. Each volunteer record must be uniquely identified. The following information is stored for each volunteer: ✑ Given name ✑ Surname ✑ Date of birth ✑ Phone number ✑ Photo You need to create a table to meet the requirements. Match the Structured Query Language SQL statements to the SQL query. Instructions: To answer, drag the appropriate SQL statement from the column on the left to its place in the SQL query on the right. Each SQL statement may be used once, more than once, or not at all. Each correct match is worth one point.

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Responda

INNT NOT NULL PRIMARY KEY,
TIMESTAMP NULL,
DATE NULL,
IMAGE NULL,
XML NULL,
INT NOT NULL FOREIGN KEY,

Questão 9

Questão

This question requires that you evaluate the underlined text to determine if it is correct. Ports 20 and 21 are the default ports to secure a SQL Server. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct.

Responda

No change is needed
1433 and 1434
411 and 412
67 and 68

Questão 10

Questão

Instructions: For each of the following statements, select Yes if the statement is true. Otherwise, select No. Each correct selection is worth one point. Description of Behavior: A clustered index sorts and stores the data columns of a table or view in order, based on the clustered index key. [blank_start][answer choice][blank_end] A non-clustered index is defined on a table or view by using a clustered index or heap. [blank_start][answer choice][blank_end] A unique index ensures that the index key contains no duplicate values and that every row in the table or view is unique. [blank_start][answer choice][blank_end] A filtered index is a clustered index that is optimized for queries that select a small percentage of rows from a table. [blank_start][answer choice][blank_end]

Responda

Questão 11

Questão

One reason to add an index is to:

Responda

Decrease storage space.
Increase database security.
Improve performance of select statements.
Improve performance of insert statements.

Questão 12

Questão

You have a table named Student that contains 100 rows. Some of the rows have a NULL value in the FirstName column. You execute the following statement: DELETE FROM Student What is the result?

Responda

All rows in the table will be deleted.
All rows containing a NULL value in the FirstName column will be deleted.
You will receive an error message.
All rows and the table definition will be deleted.

Questão 13

Questão

Your class project requires that you help a charity to create a website that registers volunteers. The website must store the following data about the volunteers: ✑ Given name ✑ Surname ✑ Telephone number ✑ Email address You need to recommend a correct way to store the data. What do you recommend?

Responda

Create a table that contains columns that are named given name, surname, phone number, and email.
Create a table that contains rows that are named given name, surname, phone number, and email.
Create a view that contains columns that are named given name surname, phone number, and email.
Create a view that contains rows that are named given name surname, phone number, and email

Questão 14

Questão

Which keyword would you use in a select statement to return rows that meet a specific condition?

Responda

WHERE
UNION
ORDER BY
FROM

Questão 15

Questão

You have a table named Product that contains one million rows. You need to search for product information in the Product table by using the product's unique ID. What will make this type of search more efficient?

Responda

A cursor
A subquery
A trigger
An index

Questão 16

Questão

You need to remove a view named EmployeeView from your database. Which statement should you use?

Responda

DELETE VIEW EmployeeView
DELETE EmployeeView
DROP EmployeeView
DROP VIEW EmployeeView

Questão 17

Questão

Which category of SQL statements is used to add, remove, and modify database structures?

Responda

Data access language (DAL)
Data manipulation language (DML)
Data control language (DCL)
Data definition language (DDL)

Questão 18

Questão

You need to delete a database table. Which data definition language (DDL) keyword should you use?

Responda

ALTER
DELETE
DROP
TRUNCATE

Questão 19

Questão

You have the following table definition: CREATE TABLE Product (ProductID INTEGER, Name VARCHAR(20)) You need to insert a new product. The product's name is Plate and the product's ID is 12345. Which statement should you use?

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Responda

Option A
Option B
Option C
Option D

Questão 20

Questão

One difference between a function and a stored procedure is that a function:

Responda

Must be called from a trigger.
Must return a value.
Cannot contain a transaction.
Cannot accept parameters.

Questão 21

Questão

Instructions: For each of the following statements, select Yes if the statement is true. Otherwise, select No. Each correct selection is worth one point. The VARCHAR data type contains only numeric characters. [blank_start][answer choice][blank_end] The NUMERIC data type contains only numbers that have decimal places. [blank_start][answer choice][blank_end] The INT data type contains only whole numbers [blank_start][answer choice][blank_end]

Responda

Questão 22

Questão

At 3:00 P.M. (1500 hours), you create a backup of your database. At 4:00 P.M. (1600 hours), you create a table named Customer and import data into the table. At 5:00 P.M. (1700 hours), your server fails. You run a script to apply only the 3:00 P.M. backup to your database. What is the result of the script?

Responda

The Customer table no longer exists.
The Customer table is unaffected.
The Customer table exists but has no data.
The script fails.

Questão 23

Questão

You have a database table named SongInformation as defined below: You need to create a Structured Query Language (SQL) query to retrieve only the names of songs that sold more than 1000 compact discs (CDs). Which query should you use?

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Responda

Option A

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Option B

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Option C

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Option D

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Questão 24

Questão

The terms "bitmap," "b-tree," and "hash" refer to which type of database structure? **Needs to be rechecked on ExamLabs, one person asked why is C correct and it had three likes on that comment**

Responda

View
Function
Index
Stored procedure
Trigger

Questão 25

Questão

While attending college, you accept an IT internship at a local charity. The charity needs to report on data that is related and exists in two tables. You need to establish a relationship between the data that is in the two tables. Which constraint should you define?

Responda

Foreign key
Index key
Link key
Default key

Questão 26

Questão

You have a Department table and an Employee table in your database. You need to ensure that an employee can be assigned to only an existing department. What should you apply to the Employee table?

Responda

A primary key
An index
A foreign key
A unique constraint
A data type

Questão 27

Questão

The component that holds information for a single entry in a table is called a:

Responda

Data type
Row
Column
View

Questão 28

Questão

On which database structure does an insert statement operate?

Responda

Role
Trigger
User
Stored procedure
Table

Questão 29

Questão

You have a user that has server roles as defined below: Instructions: Use the drop-down menus to select the answer choice that completes each statement. Each correct selection is worth one point. The user can perform [blank_start][answer choice][blank_end] actions on data that is on the server. The user can perform [blank_start][answer choice][blank_end] actions on database objects that are on the server.

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Responda

no
read-only
unlimited
no
unlimited
configuration

Questão 30

Questão

You need to disable User1's access to view the data in the Customer table. Which statement should you use?

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Responda

Option A
Option B
Option C
Option D

Questão 31

Questão

You need to store product names that vary from three to 30 characters. You also need to minimize the amount of storage space that is used. Which data type should you use?

Responda

VARCHAR (3, 30)
CHAR (3, 30)
VARCHAR (30)
CHAR (30)

Questão 32

Questão

This question requires that you evaluate the underlined text to determine if it is correct. You combine data from three tables into one table. The new table includes redundancy to optimize read performance. The data in the new table has been denormalized. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct.

Responda

No change is needed
Normalized
Truncated
Indexed

Questão 33

Questão

You have a table that contains information about all students in your school. Which SQL keyword should you use to change a student's first name in the table?

Responda

UPDATE
CHANGE
SELECT
INSERT

Questão 34

Questão

Instructions: For each of the following statements, select Yes if the statement is true. Otherwise, select No. Each correct selection is worth one point. A SQL Server Login can use Windows Authentication. [blank_start][answer choice][blank_end] A SQL Server Role provides permissions at the same level. [blank_start][answer choice][blank_end] A SQL Server Login is granted permissions to database views only. [blank_start][answer choice][blank_end]

Responda

Questão 35

Questão

The Product table contains the following data. You execute the following statement: SELECT COUNT(*) FROM Product WHERE Quantity > 18 What is the value returned by this statement?

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Responda

Questão 36

Questão

You have two tables named Salesperson and Sales. You need to ensure that each record in the Sales table has a valid associated salesperson record in the Salesperson table. Which database object should you add to the Sales table?

Responda

Nonclustered index
Primary key
Foreign key
Clustered index

Questão 37

Questão

You work at a coffee shop. They ask you to set up a website that stores charges on purchases. You need to recommend a data type in a database table to run financial functions against the charged amounts. Which data type should you recommend?

Responda

Money
Bit
Varchar
Binary

Questão 38

Questão

You have a table named Employee that includes four columns. You execute the following statement: SELECT * FROM Employee Which columns are returned?

Responda

all columns
only the last column
only the first column
only the first and last columns

Questão 39

Questão

This question requires that you evaluate the underlined text to determine if it is correct. ALTER TABLE removes all rows from a table without logging the individual row deletions. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct.

Responda

No change is needed
DROP TABLE
TRUNCATE TABLE
CREATE TABLE

Questão 40

Questão

You need to insert two new products into the Product table. The first product is named Book and has an ID of 125. The second product is named Movie and has an ID of 126. Which statement should you use?

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Responda

Option A
Option B
Option C
Option D

Questão 41

Questão

You accept an IT internship at a local charity. The charity has two tables in their data model named Chapter and Language, as defined below: You create a third table named ChapterLanguage to relate the Chapter table and the Language table. You need to select columns from the Chapter and Language tables to create a composite primary key for the ChapterLanguage table. Which two columns should you select? (Choose two.)

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Responda

ChapterId
LanguageId
Country
Region
City
LanguageName

Questão 42

Questão

A database contains two tables named Customer and Order. You execute the following statement: DELETE FROM Order WHERE CustomerID = 209 What is the result?

Responda

The first order for CustomerID 209 is deleted from the Order table.
All orders for CustomerID 209 are deleted from the Order table, and CustomerID 209 is deleted from the Customer table.
All orders for CustomerID 209 are deleted from the Order table.
CustomerID 209 is deleted from the Customer table.

Questão 43

Questão

You have two database tables as defined below. The StateID column is unique in the State table. The AddressID column is unique in the Address table. The two tables are related by the StateID column. StateID is a/an [blank_start][answer choice][blank_end] in the State table. StateID is a/an [blank_start][answer choice][blank_end] in the Address table.

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Responda

index
union
foreign key
primary key
index
union
foreign key
primary key

Questão 44

Questão

Which keyword must be included in a create view statement?

Responda

WHERE
ORDER BY
UPDATE
SELECT

Questão 45

Questão

You have a table of products with fields for ProductID, Name, and Price. You need to write an UPDATE statement that sets the value in the InStock field to Yes for a specific ProductID. Which clause should you use in your update statement?

Responda

THAT
WHERE
GROUP BY
HAVING

Questão 46

Questão

You have a table named Customer. You need to add a new column named District. Which statement should you use?

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Responda

Option A
Option B
Option C
Option D

Questão 47

Questão

Which keyword can be used in a create table statement?

Responda

ORDER BY
DISTINCT
GROUP BY
UNIQUE

Questão 48

Questão

This question requires that you evaluate the underlined text to determine if it is correct. You have two tables. Each table has three rows. Nine rows will be included in the Cartesian product of these two tables. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement corrector.

Responda

No change is needed
Zero
Three
Six

Questão 49

Questão

You need to store the contact information for each student in your school database. You should store each student's information in a:

Responda

Stored procedure
Function
Row
Variable

Questão 50

Questão

You have a table that contains the following data. Which database term is used to describe the relationship between ProductID and ProductCategory?

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Responda

Cohort
Relationally dependent
Deterministic
Functionally dependent
Compositional

Questão 51

Questão

You execute the following statement: This statement is an example of a/an:

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Responda

Subquery
Union
Outer join
Cartesian product

Questão 52

Questão

You need to set up a database to provide a view of North American mammals. Match the Structured Query Language (SQL) statements to the SQL query. Instructions: To answer, drag the appropriate SQL statement from the column on the left to its place in the SQL query on the right Each SQL statement may be used once, more than once, or not at all. Each correct match is worth one point.

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Responda

CREATE VIEW [dbo] . [NorthAmericanMammal
GENERATE VIEW [dbo] . [NorthAmericanMamm
AS JOIN a.Id, a.Name
JOIN Animal a
AS SELECT a.Id, a.Name
FROM Animal a

Questão 53

Questão

Which statement will result in the creation of an index?

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Responda

Option A
Option B
Option C
Option D

Questão 54

Questão

Your database contains a table named Customer. You need to delete the record from the Customer table that has a CusromerID of 12345. Which statement should you use?

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Responda

Option A
Option B
Option C
Option D

Questão 55

Questão

The following illustration shows the structure of a clustered index in a single partition: Instructions: Use the drop-down menus to select the answer choice that completes each statement Each correct selection is worth one point. A clustered index improves the performance of queries that [blank_start][answer choice][blank_end]. A clustered index improves the performance of queries on columns that [blank_start][answer choice][blank_end].

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Responda

return large result sets
return a range of values by using the =
do not use ODER BY or GROUP BY clauses
are accessed randomly
are accessed sequentially
are not unique or contain many common va

Questão 56

Questão

You have two tables named Cars and Color as defined below. The two tables are related by ColorId. You run the following SQL statement: select: SELECT = FROM Cars LEFT OUTER JOIN Colors ON Cars.ColorID = Colors.ColorID How many rows does the SQL statement return?

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Responda

Questão 57

Questão

You have a table named Product. You create a view that includes all the products from the Product table that are in the Furniture category. You execute a statement on the Product table that deletes all the products in the Furniture category. After you execute the statement, the result set of the view is:

Responda

Empty
Deleted
Unchanged
Archived

Questão 58

Questão

Which command should you use to add a column to an existing table?

Responda

MODIFY
ALTER
UPDATE
INSERT
CHANGE

Questão 59

Questão

A named group of SQL statements that can be executed in a database is called a:

Responda

Subroutine
Formula
Stored procedure
Method

Questão 60

Questão

What defines the amount of storage space that is allocated to a value in a column?

Responda

format
key
data type
validator

Questão 61

Questão

You accept an IT internship at a local charity. The charity asks you to keep a record of its volunteers by using a database table named Volunteer. The table has the following columns and rows:

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Responda

Questão 62

Questão

You accept an IT internship at a local charity. The charity wants you to help them with compliance and auditing requirements. You need to ensure that a column or combination of columns uniquely identifies each row of a table. Which constraint should you define?

Responda

Primary key
Secondary key
Foreign key
Default key

Questão 63

Questão

Instructions: For each of the following statements, select Yes if the statement is true. Otherwise, select No. Each correct selection is worth one point. A full database backup is a copy of all of the data in the entire database. [blank_start][answer choice][blank_end] A transaction log backup backs up all the data in the database. [blank_start][answer choice][blank_end] A differential backup copies only data that was changed before the last full backup. [blank_start][answer choice][blank_end] A file or filegroup restore specifies a portion of the database to recover. [blank_start][answer choice][blank_end]

Responda

Questão 64

Questão

You have the following table definition: CREATE TABLE Product (ID INTEGER PRIMARY KEY, Name VARCHAR(20), Quantity INTEGER) The Product table contains the following data. You execute the following statement: SELECT Name FROM Product WHERE Quantity IS NOT NULL How many rows are returned?

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Responda

Questão 65

Questão

You need to enable a new employee to authenticate to your database. Which command should you use?

Responda

ALLOW USER
CREATE USER
ADD USER
INSERT USER
ALTER USER

Questão 66

Questão

You have a table named Product. The Product table has columns for ProductDescription and ProductCategory. You need to change the ProductCategory value for all the spoons in the Product table to 43. Which statement should you use?

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Responda

Option A
Option B
Option C
Option D

Questão 67

Questão

You need to combine the results of two queries into a single result that contains all of the rows from both queries. Which Structured Query Language (SQL) statement should you use?

Responda

TRUNCATE
JOIN
EXCEPT
UNION

Questão 68

Questão

This question requires that you evaluate the underlined text to determine if it is correct. The CREATE TABLE command removes one or more table definitions and all data, indexes, triggers, constraints, and permission specifications for those tables. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct

Responda

No change is needed
DROP TABLE
TRUNCATE TABLE
ALTER TABLE

Questão 69

Questão

You execute a statement inside a transaction to delete 100 rows from a table. The transaction fails after only 40 rows are deleted. What is the result in the database?

Responda

The table will be corrupted.
Forty (40) rows will be deleted from the table.
The transaction will restart.
No rows will be deleted from the table.

Questão 70

Questão

You need to rename a column in a database table. Which data definition language (DDL) statement should you use?

Responda

ALTER
INSERT
CREATE
UPDATE

Questão 71

Questão

This question requires that you evaluate the underlined text to determine if it is correct. Use the ALTER statement to add a new table in a database. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct.

Responda

No change is needed
UPDATE
INSERT
CREATE

Questão 72

Questão

This question requires that you evaluate the underlined text to determine if it is correct. In a database table, each column represents a unique record. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct

Responda

No change is needed
Table
Index
Row

Questão 73

Questão

This question requires that you evaluate the underlined text to determine if it is correct. A view can be used to ensure referential integrity. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct

Responda

No change is needed.
Save an extra copy of data stored in a separate table.
Limit access to specific rows or columns of data in a table.
Save historical data before deleting it from the base table.

Questão 74

Questão

This question requires that you evaluate the underlined text to determine if it is correct. First normal form requires that a database excludes repeating groups. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct.

Responda

No change is needed.
Composite keys
Duplicate rows
Foreign keys

Questão 75

Questão

This question requires that you evaluate the underlined text to determine if it is correct. Views are database objects that contain all of the data in a database. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct

Responda

No change is needed
Queries
Stored procedures
Tables

Questão 76

Questão

You develop a database to store data about textbooks. The data must be stored to process at a later time. Which database object should you use to store the data?

Responda

View
Table
Function
Stored procedure

Questão 77

Questão

You execute the following statement: SELECT EmployeeID, FirstName, DepartmentName FROM Employee, Department This type of operation is called a/an:

Responda

Intersection
Outer join
Equi-join
Cartesian product

Questão 78

Questão

Which statement creates a composite key?

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Responda

Option A
Option B
Option C
Option D

Questão 79

Questão

What is one difference between an update statement and a delete statement?

Responda

An update statement can change only one row.
A delete statement cannot use a where clause.
An update statement does not remove rows from a table.
A delete statement works only within a stored procedure.

Questão 80

Questão

You work at a restaurant and they ask you to help them with a data issue. They provide you with the following recipe data: You need to normalize the data to third normal form. How many tables should you create?

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Responda

Questão 81

Questão

Which command should you use to give a user permission to read the data in a table?

Responda

ALLOW SELECT
LET READ
PERMIT READ
GRANT SELECT

Questão 82

Questão

You need to store the first name, last name, and student ID for 100 students. This information will be stored in a table as:

Responda

100 items and three cells.
100 rows and three columns.
three rows and 100 columns.
three items and 100 cells.

Questão 83

Questão

You have a Customer table and an Order table. You join the Customer table with the Order table by using the CusromerID column. The results include: ✑ All customers and their orders ✑ Customers who have no orders Which type of join do these results represent?

Responda

Complete join
Partial join
Inner join
Outer join

Questão 84

Questão

This question requires that you evaluate the underlined text to determine if it is correct. Use the ALLOW SELECT command to give a user permission to read the data in a table. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct

Responda

No change is needed
GRANT SELECT
LET HEAD
PERMIT READ

Questão 85

Questão

This question requires that you evaluate the underlined text to determine if it is correct. Use the FROM keyword in a SELECT statement to return rows that meet a specific condition. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct

Responda

No change is needed
ORDER BY
UNION
WHERE

Questão 86

Questão

First normal form requires that a database excludes:

Responda

Foreign keys
Composite keys
Duplicate rows
Repeating groups

Questão 87

Questão

You have a database table that contains the following columns:

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Responda

Option A
Option B
Option C
Option D

Questão 88

Questão

On which database structure does an update statement operate?

Responda

Table
User
Trigger
Role

Questão 89

Questão

You need to establish a set of permissions that you can routinely assign to new users. What should you create?

Responda

Resource
Group
List
Role

Questão 90

Questão

You need to retrieve data from two related database tables based on a column that exists in both tables. Which command should you use in a query?

Responda

INTERSECT
UNION
JOIN
TRUNCATE

Questão 91

Questão

You have a table named Product that contains the following data. The PrcducrID column is the primary key. The CategoryID column is a foreign key to a separate table named Category. You execute the following statement: INSERT INTO Product VALUES (3296, 'Table', 4444) What is the result?

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Responda

a foreign key constraint violation
a syntax error
a new row in the Product table
a primary key constraint violation
a new row in the Category table

Questão 92

Questão

This question requires that you evaluate the underlined text to determine if it is correct. A row holds information for a single record in a table. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct

Responda

No change is needed
Column
Data type
View

Questão 93

Questão

You have two tables. Each table has three rows. How many rows will be included in the Cartesian product of these two tables?

Responda

Questão 94

Questão

In SQL, an insert statement is used to add a:

Responda

User to a database.
Row of data to a table.
Table to a database.
Column to a table definition.

Questão 95

Questão

Which type of index changes the order in which the data is stored in a table?

Responda

non-sequential
sequential
non-clustered
clustered

Questão 96

Questão

You assign User1 a set of permissions that include the WITH GRANT OPTION. The WITH GRANT OPTION enables User1 to:

Responda

request a log of permission use.
delegate permissions to other users.
create new database users.
view other users' permissions.

Questão 97

Questão

You are creating a table to store customer data. The AccountNumber column uses values that always consist of one letter and four digits. Which data type should you use for the AccountNumber column?

Responda

CHAR
BYTE
DOUBLE
SMALLINT

Questão 98

Questão

You accept an IT internship at a local charity. The charity asks you to keep a record of its volunteers by using a database table named Volunteer. When volunteers ask to be removed from mailing lists, the table must be updated. You need to use a transaction to ensure that the database has data integrity and referential integrity. Which statement should you use?

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100 (binary/octet-stream)

Responda

Option A
Option B
Option C
Option D

Questão 99

Questão

The following graphic shows the components of a SQL Server application. You access the SQL Server application through Internet Explorer. The [blank_start][answer choice][blank_end] computer is the first line of defense against SQL injections and weak input validation. The [blank_start][answer choice][blank_end] computer should be formatted with NTFS to protect program, database, and log files from unauthorized access.

Image:

101 (binary/octet-stream)

Responda

client
www.contoso.com
s01.contoso.com
client
www.contoso.com
s01.contoso.com

Questão 100

Questão

In which situation do you need to perform a restore on a database?

Responda

when data becomes corrupted in the database
when you need to roll back a transaction
when you encounter an error in your application
when data needs to be deleted from the database

Questão 101

Questão

You have a database table that stores information about school attendance. You have a data set that is defined as follows:

Image:

103 (binary/octet-stream)

Responda

BIT
DATETIME
VARCHAR
CHAR
INT
DECIMAL

Questão 102

Questão

Which database term is used to describe the process of applying a backup to a damaged or corrupt database?

Responda

Recover
Restore
Commit
Attach

Questão 103

Questão

You need to store product quantities, and you want to minimize the amount of storage space that is used. Which data type should you use?

Responda

INTEGER
DOUBLE
COUNT
FLOAT

Questão 104

Questão

Which statement should you use to remove a foreign key?

Responda

ALTER TABLE
DELETE TABLE
DELETE FOREIGN KEY
ALTER FOREIGN KEY

Questão 105

Questão

You have the following table: Adding a [blank_start][answer choice][blank_end] on the FlightNumber column physically sorts rows in the table by FlightNumber. Adding a [blank_start][answer choice][blank_end] on the Airline column retrieves data faster, but will not physically sort rows in the table by Airline.

Image:

107 (binary/octet-stream)

Responda

foreign key
clustered index
nonclustered index
foreign key
clustered index
nonclustered index

Questão 106

Questão

What are three valid data manipulation language (DML) commands? (Choose three.)

Responda

INSERT
COMMIT
DELETE
OUTPUT
UPDATE

Questão 107

Questão

Denormalization is performed in order to:

Responda

Reduce redundancy.
Eliminate repeating groups.
Create smaller tables.
Improve query performance.

Questão 108

Questão

You need to add rows to a database table. Which Structured Query Language (SQL) keyword should you use?

Responda

JOIN
INSERT
CREATE
UPDATE

Questão 109

Questão

Which permission does a user need in order to run a stored procedure?

Responda

EXECUTE
ALLOW
CALL
RUN

Questão 110

Questão

Which command should you use to remove a table from a database?

Responda

REMOVE TABLE
UPDATE TABLE
DROP TABLE
DELETE TABLE

Questão 111

Questão

This question requires that you evaluate the underlined text to determine if it is correct. Create a query that returns a set of table data by using the UPDATE statement. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct.

Responda

No change is needed
INSERT
REPLACE
SELECT

Questão 112

Questão

Instructions: For each of the following statements, select Yes if the statement is true. Otherwise, select No. Each correct selection is worth one point. You can delete data by using a stored procedure. [blank_start][answer choice][blank_end] A function must have a return value. [blank_start][answer choice][blank_end] A stored procedure must have a return value. [blank_start][answer choice][blank_end]

Responda

Questão 113

Questão

Which key uniquely identifies a row in a table?

Responda

foreign
primary
local
superkey

Questão 114

Questão

You have a table that contains the following data.

Image:

116 (binary/octet-stream)

Responda

defragmentation
normalization
fragmentation
denormalization

Questão 115

Questão

Which constraint ensures a unique value in the ID column for each customer?

Responda

DISTINCT
FOREIGN KEY
SEQUENTIAL
PRIMARY KEY

Questão 116

Questão

You have a table that contains product IDs and product names. You need to write an UPDATE statement to change the name of a specific product to glass. What should you include in the update statement?

Responda

SET ProduetName = 'glass'
LET ProduetName = 'glass'
EXEC ProduetName = 'glass'
ASSIGN ProduetName = 'glass'

Questão 117

Questão

You need to populate a table named EmployeeCopy with data from an existing table named Employee. Which statement should you use?

Image:

119 (binary/octet-stream)

Responda

Option A
Option B
Option C
Option D

Questão 118

Questão

You are writing a select statement to find every product whose name contains a specific character. Which keyword should you use in your where clause?

Responda

FIND
BETWEEN
INCLUDES
LIKE

Questão 119

Questão

This question requires that you evaluate the underlined text to determine if it is correct. Use indexing to create, remove, or change database objects. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement correct.

Responda

No change is needed
Data manipulation language (DML) statements
Data definition language (DDL) statements
A unique constraint

Questão 120

Questão

You delete rows in a table named Order. The corresponding rows in the OrderItem table are automatically deleted. This process is an example of a/an:

Responda

Inherited delete
Cascade delete
Functional delete
Waterfall delete
Domino delete

Questão 121

Questão

You are writing an SQL statement to retrieve rows from a table. Which data manipulation language (DML) command should you use?

Responda

READ
SELECT
OUTPUT
GET

Questão 122

Questão

You need to list the name and price of each product, sorted by price from highest to lowest. Which statement should you use

Image:

124 (binary/octet-stream)

Responda

Option A
Option B
Option C
Option D

Questão 123

Questão

Data in a database is stored in:

Responda

Tables
Queries
Data types
Stored procedures

Questão 124

Questão

You have a table named Employee that includes the following columns: EmployeeID Smp1oyeeName Which statement should you use to return the number of rows in the table?

Image:

126 (binary/octet-stream)

Responda

Option A
Option B
Option C
Option D

Questão 125

Questão

Which two elements are required to define a column? (Choose two.)

Responda

A name
A key
An index
A data type

Questão 126

Questão

This question requires that you evaluate the underlined text to determine if it is correct. Truncate is a database term used to describe the process of applying a backup to a damaged or corrupt database. Instructions: Review the underlined text. If it makes the statement correct, select "No change is needed." If the statement is incorrect, select the answer choice that makes the statement corrector.

Responda

No Change is needed
Commit
Attach
Restore

Questão 127

Questão

The following illustration shows backup strategies that use the simple recovery model and the full recovery model: Using the simple recovery model for database backups provides [blank_start][answer choice][blank_end] work-loss exposure than the full recovery model. Using the simple recovery model for database backups provides [blank_start][answer choice][blank_end] log file backups than the full recovery model.

Image:

129 (binary/octet-stream)

Responda

less
more
the same
less
more
the same

Questão 128

Questão

One reason to create a stored procedure is to:

Responda

Improve performance.
Minimize storage space.
Bypass case sensitivity requirements.
Give the user control of the query logic.

	Criado por JOSHUA BEKIARIS aproximadamente 6 anos atrás

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