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C175 Alternate Practice Test

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Database Foundations
Craig Willey
Quiz by Craig Willey, updated more than 1 year ago
Craig Willey
Created by Craig Willey almost 5 years ago
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Resource summary

Question 1

Question
A record consists of a ____
Answer
  • character
  • collection of related records
  • set of one or more field
  • group of files

Question 2

Question
A DBMS performs several important functions that guarantee the integrity and consistency of the data in the database. Which of the following is NOT one of those functions?
Answer
  • Data integrity management
  • Data storage management
  • Data reports
  • Security management

Question 3

Question
Which item is unstructured data
Answer
  • A record representing one student
  • A video
  • A table that holds student data
  • A relational database that hold course registration data

Question 4

Question
Data is/are
Answer
  • information
  • raw facts
  • processed information
  • DBMS

Question 5

Question
Which classification is correct for the box marked “Registration” in the given E-R Diagram?
Image:
1 (binary/octet-stream)
Answer
  • Intersection data
  • Modality data
  • Cardinality data
  • Student data

Question 6

Question
Which type of relationship exists between Student and Course
Image:
2 (binary/octet-stream)
Answer
  • One-to-many binary
  • Many-to-many binary
  • One-to-many unary
  • Many-to-many unary

Question 7

Question
What is the E-R Diagram about an online pet food vendor showing?
Image:
3 (binary/octet-stream)
Answer
  • An Invoice Line can include many Items
  • An item can only be included in one Invoice Line
  • One Invoice Line must include a minimum of one and a maximum of one Item.
  • The relationship between Item and Invoice Line is many-to-many.

Question 8

Question
A pet owner can have many pets; a specific pet is linked to one pet owner.
Answer
  • One-to-one
  • One-to-many
  • Many-to-many
  • Associative

Question 9

Question
Database models were developed to ____
Answer
  • model real-world events or conditions
  • deposit data within a single file
  • keep data within multiple data repositories
  • allow DBMSs to maintain loose control over the database activities

Question 10

Question
What is the correct way to read the modality on the right side of the association?
Image:
4 (binary/octet-stream)
Answer
  • A maximum of one activity
  • A maximum of zero activities
  • A minimum of zero activities
  • A maximum of many activities

Question 11

Question
What is the modality of Volunteer?
Image:
5 (binary/octet-stream)
Answer
  • Two or more
  • Two
  • Dependent on registration date
  • At least one

Question 12

Question
What type of relationship is expressed with the phrase “A Painter paints one or more Paintings”?
Answer
  • 1:M
  • 1:1
  • M:1
  • M:N

Question 13

Question
The entity integrity rule requires that ____
Answer
  • all primary key entries are unique
  • a part of the key may be null
  • foreign key values do not reference primary key values
  • duplicate object values are allowed

Question 14

Question
What does the ‘refer’ in referential integrity mean ?
Answer
  • The relationships between entities and attributes, also called referrals
  • Reference points that databases place in each record during backups
  • A foreign key in a table must refer to a valid primary key in another table.
  • You delete a row in one table whose primary key does not have a matching foreign key value in another table

Question 15

Question
A table is perceived as a ____
Answer
  • flat structure
  • two-dimensional structure
  • linked structure
  • graph

Question 16

Question
Another word for the term “relation” is _____
Answer
  • datafile
  • data index
  • table
  • data query

Question 17

Question
DISTINT filters the results to remove duplicates. ORDER BY _____
Answer
  • does the same thing.
  • alters the order of the rows in a table.
  • modifies the presentation by changing the order of the result set.
  • removes duplicates in the table.

Question 18

Question
A primary key ____.
Answer
  • is a minimal superkey
  • is always the first field in each table
  • must be numeric
  • must be unique

Question 19

Question
A table can be logically connected to another table by defining a ____
Answer
  • hyperlink
  • common attribute
  • primary key
  • logic key

Question 20

Question
A relational operator that allows for the combination of information from two or more tables is known as the ____ operator
Answer
  • SELECT
  • PROJECT
  • JOIN
  • DIFFERENCE

Question 21

Question
Which of the following statements concerning the primary key is true?
Answer
  • All primary key entries are unique.
  • The primary key may be null.
  • The primary key is not required for all tables.
  • The primary key data do not have to be unique.

Question 22

Question
We can describe a link by observing that ____
Answer
  • a primary key of one table appears again as a primary key in a related table
  • a foreign key of one table appears again as a foreign key in a related table
  • a primary key of one table appears again as a foreign key in a related table
  • a foreign key of one table appears again as a primary key in a related table

Question 23

Question
When designing a new database, it is a good idea to ____
Answer
  • minimize data redundancy
  • include redundant fields
  • include a common field in all tables
  • use composite keys

Question 24

Question
An attribute (or combination of attributes) that uniquely identifies each entity in a table is called a ____
Answer
  • superkey
  • foreign key
  • master key
  • secondary key

Question 25

Question
A foreign key must ____.
Answer
  • be numeric
  • be unique
  • be defined in all tables within the database
  • match the value of a primary key in a related table

Question 26

Question
The ERD is used to graphically represent the ____ database model.
Answer
  • condensed
  • physical
  • logical
  • conceptual

Question 27

Question
A derived attribute ____.
Answer
  • must be stored physically within the database
  • need not be physically stored within the database
  • has many values
  • must be based on the value of three or more attributes

Question 28

Question
A relationship is an association between ____
Answer
  • objects
  • entities
  • databases
  • fields

Question 29

Question
A ____ key is a key that consists of more than one attribute.
Answer
  • primary
  • foreign
  • composite
  • domain

Question 30

Question
A ____ attribute is one that cannot be subdivided.
Answer
  • composite
  • atomic
  • single-valued
  • multivalued

Question 31

Question
If an entity can exist apart from one or more related entities, it is said to be ____-independent
Answer
  • existence
  • relationship
  • business
  • weak

Question 32

Question
A ____ relationship exists when three entities are associated
Answer
  • unary
  • binary
  • ternary
  • weak

Question 33

Question
The set of possible values for an attribute is a ____
Answer
  • domain
  • range
  • set
  • key

Question 34

Question
Which attribute(s) make up the primary key in the table definition: CLASS (CRS_CODE, CLASS_SECTION, CLASS_TIME, CLASS_ROOM, PROF_NUM)
Answer
  • CRS_CODE
  • CLASS_SECTION
  • CRS_CODE and CLASS_SECTION
  • There is no primary key

Question 35

Question
A table that has all key attributes defined, has no repeating groups, and all its attributes are dependent on the primary key, is said to be in ____
Answer
  • 1NF
  • 2NF
  • 3NF
  • 4NF

Question 36

Question
A table that is in 2NF and contains no transitive dependencies is said to be in ____
Answer
  • 1NF
  • 2NF
  • 3NF
  • 4NF

Question 37

Question
Data redundancy produces ____
Answer
  • slower lookups
  • robust design
  • efficient storage use
  • data integrity problems

Question 38

Question
Normalization works through a series of normal ____
Answer
  • schemas
  • entities
  • databases
  • forms

Question 39

Question
Dependencies based on only a part of a composite primary key are called ____ dependencies
Answer
  • primary
  • partial
  • incomplete
  • composite

Question 40

Question
Given the table EMP_PROJ (PROJ_NUM, EMP_NUM, PROJ_NAME, EMP_NAME, JOB_CLASS, CHG_HOURS, HOURS), which of the following is a partial dependency?
Answer
  • PROJ_NUM --> PROJ_NAME
  • JOB_CLASS --> CHG_HOUR
  • PROJ_NUM, EMP_NUM --> HOURS
  • PROJ_NUM, EMP_NUM --> CHG_HOURS

Question 41

Question
A relation is not in 1NF if
Answer
  • it has multiple candidate keys
  • all of the key attributes are defined
  • there are repeating groups in the table
  • all attributes are dependent on the primary key

Question 42

Question
The SQL command that lets you insert data into a table, one row at a time, is ____
Answer
  • INSERT
  • SELECT
  • COMMIT
  • UPDATE

Question 43

Question
The SQL command that enables you to make changes in the data is ____
Answer
  • INSERT
  • SELECT
  • COMMIT
  • UPDATE

Question 44

Question
To list all the contents of the PRODUCT table, you would use ____.
Answer
  • LIST * FROM PRODUCT;
  • SELECT * FROM PRODUCT;
  • DISPLAY * FROM PRODUCT;
  • SELECT ALL FROM PRODUCT;

Question 45

Question
Which command would you use when making corrections to the PRODUCT table?
Answer
  • CHANGE PRODUCT SET P_INDATE = '01/18/2004' WHERE P_CODE = '13-Q2/P2';
  • ROLLBACK PRODUCT SET P_INDATE = '01/18/2004' WHERE P_CODE = '13-Q2/P2';
  • EDIT PRODUCT SET P_INDATE = '01/18/2004' WHERE P_CODE = '13-Q2/P2';
  • UPDATE PRODUCT SET P_INDATE = '01/18/2004' WHERE P_CODE = '13-Q2/P2';

Question 46

Question
Which command would be used to delete the table row where the P_Code = '2238/QPD'?
Answer
  • DELETE FROM PRODUCT WHERE P_CODE = '2238/QPD';
  • REMOVE FROM PRODUCT WHERE P_CODE = '2238/QPD'
  • ERASE FROM PRODUCT WHERE P_CODE = '2238/QPD';
  • ROLLBACK FROM PRODUCT WHERE P_CODE = '2238/QPD';

Question 47

Question
Which command is used to select partial table contents?
Answer
  • SELECT <column(s)> FROM <Table name> WHERE <Item>;
  • LIST <column(s)> FROM <Table name> WHERE <Conditions>;
  • SELECT <column(s)> FROM <Table name> WHERE <Conditions>;
  • LIST<column(s)> FROM <Table name> WHERE <Item>;

Question 48

Question
Which query will output the table contents when the value of V_CODE is less than or equal to 21344?
Answer
  • SELECT P_DESCRIPT, P_INDATE, P_PRICE, V_CODE FROM PRODUCT WHERE V_CODE <> 21344;
  • SELECT P_DESCRIPT, P_INDATE, P_PRICE, V_CODE FROM PRODUCT WHERE V_CODE <=21344;
  • SELECT P_DESCRIPT, P_INDATE, P_PRICE, V_CODE FROM PRODUCT WHERE V_CODE => 21344;
  • SELECT P_DESCRIPT, P_INDATE, P_PRICE, V_CODE FROM PRODUCT WHERE V_CODE = 21344;

Question 49

Question
Which query will list all the rows in which the inventory stock dates occur on or after January 20, 2006?
Answer
  • SELECT P_DESCRIPT, P_QOH, P_MIN, P_PRICE, P_INDATE FROM PRODUCT WHERE P_INDICATE >= '01/20/2006'
  • SELECT P_DESCRIPT, P_QOH, P_MIN, P_PRICE, P_INDATE FROM PRODUCT WHERE P_INDICATE >= #01/20/2004#
  • SELECT P_DESCRIPT, P_QOH, P_MIN, P_PRICE, P_INDATE FROM PRODUCT WHERE P_INDICATE >= '20-JAN-2004'
  • SELECT P_DESCRIPT, P_QOH, P_MIN, P_PRICE, P_INDATE FROM PRODUCT WHERE P_INDICATE >= {01-20-2004}

Question 50

Question
What is the SQL syntax requirement to list the table contents for either V_CODE = 21344 or V_CODE = 24288?
Answer
  • SELECT P_DESCRIPT, P_INDATE, P_PRICE, V_CODE FROM PRODUCT WHERE V_CODE = 21344 OR V_CODE <= 24288
  • SELECT P_DESCRIPT, P_INDATE, P_PRICE, V_CODE FROM PRODUCT WHERE V_CODE = 21344 OR V_CODE => 24288
  • SELECT P_DESCRIPT, P_INDATE, P_PRICE, V_CODE FROM PRODUCT WHERE V_CODE = 21344 OR V_CODE > 24288
  • SELECT P_DESCRIPT, P_INDATE, P_PRICE, V_CODE FROM PRODUCT WHERE V_CODE = 21344 OR V_CODE = 24288

Question 51

Question
What is the command to join the P_DESCRIPT and P_PRICE fields from the PRODUCT table and the V_NAME, V_AREACODE, V_PHONE, and V_CONTACT fields from the VENDOR table where the value of V_CODE match?
Answer
  • SELECT P_DESCRIPT, P_PRICE, V_NAME, V_CONTACT, V_AREACODE, V_PHONE FROM PRODUCT, VENDOR WHERE PRODUCT.V_CODE <> VENDOR.V_CODE;
  • SELECT P_DESCRIPT, P_PRICE, V_NAME, V_CONTACT, V_AREACODE, V_PHONE FROM PRODUCT, VENDOR WHERE PRODUCT.V_CODE = VENDOR.V_CODE
  • SELECT P_DESCRIPT, P_PRICE, V_NAME, V_CONTACT, V_AREACODE, V_PHONE FROM PRODUCT, VENDOR WHERE PRODUCT.V_CODE <= VENDOR.V_CODE;
  • SELECT P_DESCRIPT, P_PRICE, V_NAME, V_CONTACT, V_AREACODE, V_PHONE FROM PRODUCT, VENDOR WHERE PRODUCT.V_CODE => VENDOR.V_CODE;

Question 52

Question
SQL allows the use of special operators in conjunction with the WHERE clause. A special operator used to check for similar character strings is ____.
Answer
  • BETWEEN
  • IS NULL
  • LIKE
  • IN

Question 53

Question
A table can be deleted from the database by using the ____ command.
Answer
  • DROP
  • DELETE
  • MODIFY
  • ERASE

Question 54

Question
UPDATE tablename ***** [WHERE conditionlist]; What command replaces the ***** in the above statement?
Answer
  • SET columnname = expression
  • columnname = expression
  • expression = columnname
  • LET columnname = expression

Question 55

Question
A ____ join returns rows with matching values and includes all rows from both tables (T1 and T2) with unmatched values.
Answer
  • natural
  • cross
  • full outer
  • left outer

Question 56

Question
During which step in the extract, transform, load (ETL) process are raw data sets aggregated?
Answer
  • Transformation
  • Extraction
  • Loading
  • Denormalization

Question 57

Question
Which is an important issue associated with the loading component of extract, transform, load (ETL)?
Answer
  • Mapping keys from one system to another
  • Monitor refreshing volume and frequency
  • Determining the content of the data
  • Denormalizing and renormalizing data

Question 58

Question
A database includes the table shown above in the exhibit. Each teacher is associated with exactly one campus. The address in the table is the address for the campus where the teacher teaches. What change would you need to make to normalize the database to the third normal form (3NF)?
Image:
1 (binary/octet-stream)
Answer
  • Combine the FirstName and LastName columns into a single column.
  • Combine the Campus, Address, City, State, Country, and PostalCode columns into a single column.
  • Create a separate table for campus address information. Use the Campus as the primary key. Add a TeacherID column to the table and relate it to the Teacher ID column in the Teachers table.
  • Create a separate table for campus address information. Use Campus as the primary key for the table. Create a foreign key in the Teachers table that relates teacher to the campus.

Question 59

Question
Which statement will remove all rows from the Materials table that have a Status value of ‘Obsolete’ but do not have a value for the VendorID column?
Answer
  • DELETE Materials WHERE Status = ‘Obsolete’ OR VendorID IS NULL
  • DELETE FROM Materials WHERE Status = ‘Obsolete’ AND VendorID IS NULL
  • DELETE MaterialID, Description, Status, VendorID FROM Materials WHERE Status = ‘Obsolete’ AND VendorID IS NULL
  • DELETE FROM Materials WHERE Status = ‘Obsolete’ WHERE VendorID IS NULL

Question 60

Question
The TestScores table is shown in the exhibit and has these characteristics: Each student has a unique StudentID that references the Students table. A specific test can be taken more than once. Each instructor has a unique InstructorID that references the Instructors table Each student may take multiple tests on the same date. Each student may take tests on multiple dates. What column or columns should you use for the primary key?
Image:
2 (binary/octet-stream)
Answer
  • StudentID, Date
  • StudentID, Test, Date, InstructorID
  • StudentID, Test, and Date
  • Test

Question 61

Question
You are creating a relational database to store information about instructors and the courses that each instructor teaches. Each course is taught by a single instructor. You have created an Instructor table and a Course table as shown above. You need to create a relationship between the Instructor table and the Course table. You need to keep duplicate data to a minimum. What should you do?
Image:
3 (binary/octet-stream)
Answer
  • Create a new column in the Instructor table.
  • Create new columns in the Instructors table for each course taught
  • Create a new table that includes two columns.
  • Create a new column in the Course table

Question 62

Question
Which of the following is structured data?
Answer
  • Images
  • Email Attachments
  • Records in a database
  • Audio/Video

Question 63

Question
Which kind of relationship does the diagram depict?
Image:
4 (binary/octet-stream)
Answer
  • Unary one-to-many
  • Binary many-to-many
  • Unary many-to-many
  • Binary one-to-many

Question 64

Question
Which kind of relationship does the diagram depict?
Image:
5 (binary/octet-stream)
Answer
  • Unary one-to-many
  • Binary many-to-many
  • Unary one-to-one
  • Binary one-to-many

Question 65

Question
What is the modality of appointment?
Image:
6 (binary/octet-stream)
Answer
  • At least one
  • Dependent on the quantity
  • Two
  • Two or more

Question 66

Question
What form is this table in?
Image:
7 (binary/octet-stream)
Answer
  • Unnormalized
  • First normal form
  • Second normal form
  • Third normal form

Question 67

Question
What form is this table in?
Image:
1 (binary/octet-stream)
Answer
  • Unnormalized
  • First normal form
  • Second normal form
  • Third normal form

Question 68

Question
What form is this table in?
Image:
2 (binary/octet-stream)
Answer
  • Unnormalized
  • First normal form
  • Second normal form
  • Third normal form

Question 69

Question
What form is this table in?
Image:
3 (binary/octet-stream)
Answer
  • Unnormalized
  • First normal form
  • Second normal form
  • Third normal form

Question 70

Question
Affinity grouping question – Where does affinity grouping occur in data mining?
Answer
  • Between objects
  • Among clusters
  • Among entities and target applications
  • Between entity group names

Question 71

Question
How is prediction distinguished from estimation in data mining?
Answer
  • Estimation assumptions do not need to be tested.
  • Prediction is used to look at historical data only.
  • Estimation divides small collections of entities into smaller groups of similar entities.
  • Prediction classifies objects according to an expected future behavior.

Question 72

Question
During which step in the extract, transform, load (ETL) process are raw data sets aggregated?
Answer
  • Conversion
  • Loading
  • Extraction
  • Transformation
  • Denormalization

Question 73

Question
Which issues is focused on the loading component of extract, transform, load (ETL)?
Answer
  • Monitor refreshing volume and frequency
  • Mapping keys from one system to another
  • Determining the content of the data
  • Denormalizaing and renormalizing the data

Question 74

Question
How can a data warehouse assist in an organization’s data analysis?
Answer
  • By serving as the primary source of information that feeds analytical processing
  • By storing data that is no longer in use but may be needed for future analyses
  • By providing a place where unnormalized data can reside before it is processed
  • By providing a physical space where groups of servers can process data on a large scale

Question 75

Question
Which set of results should a company expect from implementing a business intelligence system?
Answer
  • Reduced hardware redundancy and decreased workloads
  • Riskier capital and asset investments and increased throughput
  • Increased profitability and reduced hardware redundancy
  • Increased profitability and increased throughput.
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