17454398
Questão 1
Questão
A DISTINCT must always be user in the top-most SELECT statement of a set operation
Responda
- True
- False
Questão 2
Questão
A parent table referenced by a child table may not be dropped
Responda
- True
- False
Questão 3
Questão
A SELECT statement that is embedded in a clause of another SELECT statement is called
Responda
-
Main query
-
Subquery
-
Inner query
-
Outer query
Questão 4
Questão
A subquery must be enclosed in _________ .
Responda
-
Double quotes
-
Single quotes
-
Parantheses
-
Braces
Questão 5
Questão
A table can be created with or without data
Responda
- True
- False
Questão 6
Questão
Any user can grant or revoke ant type of system privileges to or from another user.
Responda
- True
- False
Questão 7
Questão
Both object and system privileges can be granted through a single role to a user.
Responda
- True
- False
Questão 8
Questão
By default, the foreign key restricts deletes of any parent row that has a corresponding child row(s).
Responda
- True
- False
Questão 9
Questão
Comparison conditions fall into two classes:
Responda
-
Single-column operators (>, \=, >\=, <, <>,<\=) and multiple-column operators (IN, ANT, ALL)
-
Single-row operators (>, \=, >\=, <, <>,<\=) and multiple-column operators (IN,ANY,ALL)
-
Single-row operators (>, \=, >\=, <, <>,<\=) and multiple-row operators (IN,ANY,ALL)
-
Multiple-row operators (>, \=, >\=, <, <>,<\=) and single-row operators (IN,ANY,ALL)
Questão 10
Questão
Consider the EMPLOYEES table. When condition in the WHERE clause limit the employees to IT Programmers with salary greater than 5000?
Responda
-
WHERE salary>5000 AND job_id \= 'IT_PROG'
-
WHERE salary>5000 AND job_id \= "IT_PROG"
-
WHERE salary>5000 AND job_id \= IT_PROG
-
WHERE salary>5000 OR job_id \= 'IT_PROG'
Questão 11
Questão
Consider the EMPLOYEES table. Which condition in the WHERE clause limit the employees to those whose salary is greater than 5000 but less than 18000?
Responda
-
WHERE salary > 5000 OR salary < 18000
-
WHERE salary < 5000 AND salary > 18000
-
WHERE salary > 5000 AND salary < 18000
-
WHERE salary >5000 AND salary > 18000
Questão 12
Questão
Consider the EMPLOYEES table. Which condition in the WHERE clause limit the employees to those whose last name and first name starts with the letter 'K'?
Responda
-
WHERE last_name \= 'K%' and first_name \= 'K%'
-
WHERE last_name LIKE 'K_' and first_name LIKE 'K_'
-
WHERE last_name LIKE 'K%' and first_name LIKE 'K%'
-
WHERE last_name and first_name \= 'K%'
Questão 13
Questão
Consider the EMPLOYEES table. Which condition in the WHERE clause limit the employees to those who do not work in the departments 90 and 60?
Responda
-
WHERE department_id \= 90 AND department_id \= 60
-
WHERE department_id IN (90,60)
-
WHERE department_id NOT IN (90,60)
-
WHERE department_id \=90 PR department_id \= 60
Questão 14
Questão
Consider the EMPLOYEES table. Which condition in the WHERE clause limit the employees to those who work in the department prompted by the user?
Responda
-
WHERE department_id \= '%Department'
-
WHERE department_id LIKE '%Department'
-
WHERE department_id \= '&Department'
-
WHERE department_id like '_Department'
Questão 15
Questão
Consider the EMPLOYEES table. Which of the following statements displays the date in the 'January, 19 1998'?
Responda
-
SELECT TO_DATE(hire_date,'fmMONTH, DD YYYY') FROM employees
-
SELECT TO_DATE(hire_date,'fmMON, DD YEAR') FROM employees
-
SELECT TO_CHAR(hire_date,'fmMonth, DD YYYY') FROM employees
-
SELECT TO_DATE(hire_date,'fmMonth, DD YYYY') FROM employees
Questão 16
Questão
Consider the EMPLOYEES table. Which of the following conditions in the WHERE clause will generate an error?
Responda
-
SELECT * FROM employees WHERE last_name\='&Name'
-
SELECT job_id, SUM(salary) FROM employees GROUP BY '&Column'
-
SELECT * FROM &Table
-
SELECT &Column FROM employees
Questão 17
Questão
Consider the EMPLOYEES table. Which of the following displays the maximum average salary for each department?
Responda
-
SELECT MAX(AVG(salary)) FROM employees
-
SELECT department_id, MAX(AVG(salary)) FROM employees GROUP BY department_id
-
SELECT MAX(AVG(salary)) FROM employees GROUP BY department_id
-
SELECT AVG(MAX(salary)) FROM employees GROUP BY department_id
Questão 18
Questão
Consider the EMPLOYEES table. Which of the following SQL statements is correct to provide the sentence in the format "King has been working since 01.01.1987" with "Employee Information" alias?
Responda
-
SELECT last_name ||'has been working since' || hire_date "Employee Information" FROM employees;
-
SELECT last_name || 'has been working since' || hire_date Employee Information FROM employees
-
SELECT last_name || "has been working since" || hire_date "Employee Information" FROM employees;
-
SELECT last_name || 'has been working since' || hire_date 'Employee Information' FROM employees;
Questão 19
Questão
Consider the EMPLOYEES table. Which of the following statements count the number of employees within each department?
Responda
-
SELECT department_id, COUNT(last_name) FROM employees GROUP BY department_id
-
SELECT department_name, COUNT(last_name) FROM employees GROUP BY department_id
-
SELECT department_id, COUNT(last_name) FROM departments GROUP_BY last_name
-
SELECT department_id, department_name, COUNT(last_name) FROM employees GROUP BY department_id
Questão 20
Questão
Consider the following SQL statement. What will be the result? SELECT e.last_name, e.salary, d.department_name FROM employees e, departments d WHERE e.department_id \= d.department_id
Responda
-
An error will occur since none of the JOIN operations is used
-
An error will occur since in the SELECT clause a column thet is used to join the tables is missing
-
The last names of the employees and their salaries will be displayed along with the departments names where the employees work
-
The Cartesian product of the two tables based on the department_id column will be displayed
Questão 21
Questão
Consider the SQL statement. Which of the following clauses does not sort the result rows by the salary values in the ascending order? SELECT last_name "Employee", salary "Salary" FROM employees
Responda
-
ORDER BY salary;
-
ORDER BY 2;
-
ORDER BY "Salary" ASC;
-
ORDER BY Salary DESC;
Questão 22
Questão
Consider the SQL statement. Which of the following clauses does not sort the result rows by salary value in the ascending order?
SELECT last_name "Employee", salary "Salary"
FROM employees
Responda
-
ORDER BY salary;
-
ORDER BY 2;
-
ORDER BY "Salary" ASC;
-
ORDER BY Salary DESC;
Questão 23
Questão
Delete the zip codes 02199 and 43011 from the ZIPCODE table. Make the change permanent.
Responda
-
DELETE FROM zipcode WHERE zip ANY ('02199','43011') COMMIT
-
DELETE FROM zipcode WHERE zip ANY ('02199','43011')
-
DELETE FROM zipcode WHERE zip IN ('02199','43011') COMMIT
-
DELETE FROM zipcode WHERE zip ALL ('02199','43011') COMMIT
Questão 24
Questão
Constraints always have a name.
Responda
- True
- False
Questão 25
Questão
DML statement such as INSERT, UPDATE, DELETE, and MERGE obtain a lock on the row(s), so other users cannot manipulate it.
Responda
- True
- False
Questão 26
Questão
If there are schemas named USERA and USERB, and both have an EMPLOYEES table, then if USERA wants to access the EMPLOYEES table that belongs to USERB, USERA must write select statement as follows:
Responda
-
SELECT * FROM userb.employees;
-
SELECT * FROM employees;
-
SELECT * FROM usera.employees;
-
SELECT * FROM employees.userb;
Questão 27
Questão
It is possible to combine from two tables that do not have a primary key/foreign key relationship into one result using a set operation.
Responda
- True
- False
Questão 28
Questão
Privileges, roles, and synonyms are all used to implement security in an Oracle Database.
Responda
- True
- False
Questão 29
Questão
Queries containing set operators are called ______ .
Responda
-
Compound queries
-
Subqueries
-
Inner queries
-
Outer queries
Questão 30
Questão
Queries that return more than one row from the inner SELECT statement are called
Responda
-
Multiple-row subqueries
-
Multiple-column subqueries
-
Sing-column subqueries
-
Single-row subqueries
Questão 31
Questão
Queries that return only one row from the inner SELECT statement are called
Responda
-
Multiple-column subqueries
-
Single-row subqueries
-
Single-column subqueries
-
Multiple-row subqueries
Questão 32
Questão
What will be the result of the following SQL statement?
SELECT INITCAP(SUBSTR(CONCAT('Hello',world),4,3)) FROM DUAL;
Responda
-
LLO
-
Llo
-
Low
-
LOW
Questão 33
Questão
What will be the result of the following SQL statement?
SELECT count(d.department_name), l.city
FROM departments d NATURAL JOIN locations l
GROUP BY l.city
Responda
-
The number of department in all cities is shown
-
The number of departments in EACH city is shown.
-
An error will occur since the GROUP BY clause cannot be used with NATURAL JOIN
-
The number if departments in one particular city is shown
Questão 34
Questão
What will be the result of the following query?
SELECT ROUND (63.548, -1) FROM DUAL;
Responda
-
64
-
60
-
63
-
70
Questão 35
Questão
What will be the result of the following SQL statement?
SELECT SUBSTR ('Hello,World!!!',13) FROM DUAL
Responda
-
An error will occur, since SUBSTR function need to take 3 parameters
-
Hello,World!!!13
-
!!!
-
Hello, World!
Questão 36
Questão
The ______ operator compares a value to every value returned by a subquery.
Responda
-
NOT
-
ALL
-
SOME
-
ANY
Questão 37
Questão
The condition INSERT FIRST command evaluates the WHEN condition in order. For all conditions that are true a row is inserted into the appropriate table.
Responda
- True
- False
Questão 38
Questão
The data dictionary view USER_TAB_PRIVS_MADE lists details of table privilege grants performed by the current user.
Responda
- True
- False
Questão 39
Questão
The data of a temporary table is visible to all session.
Responda
- True
- False
Questão 40
Questão
The NUMBER data types is usually the best choice for a primary key.
Responda
- True
- False
Questão 41
Questão
The subquery generally executes ______ , and its output is used to complete the query condition for the main (or ____ ) query.{
Responda
-
First, outer
-
Last, outer
-
Last, inner
-
First, inner
Questão 42
Questão
The TRANCATE command and the TRUNC function can be used interchangeably.
Responda
- True
- False
Questão 43
Questão
The TRUNCATE command removes all data permanently from a table.
Responda
- True
- False
Questão 44
Questão
The UNION and UNION ALL set operator have the opposite effect other.
Responda
- True
- False
Questão 45
Questão
The ____ operator compares a value to EACH value returned by a subquery
Responda
-
NOT
-
ANY
-
SOME
-
ALL
Questão 46
Questão
The ____ operator returns all rows that are selected by either query
Responda
-
UNION ALL
-
INTERSECT
-
UNION
-
MINUS
Questão 47
Questão
The ______ constraint defines a condition that each row must satisfy.
Responda
-
PRIMARY KEY
-
CHECK
-
UNIQUE
-
FOREIGN KEY
Questão 48
Questão
To obtain a list of last names that students and instructors share, you use the MINUS set operator
Responda
- True
- False
Questão 49
Questão
Transaction control determines when data manipulates becomes permanent in a database.
Responda
- True
- False
Questão 50
Questão
Use the _____ operator to return all rows from multiple tables and eliminate any duplicate rows.
Responda
-
UNION
-
MINUS
-
UNION ALL
-
INTERSECT
Questão 51
Questão
What will be the result of the following SQL statement? (SYSDATE is a date of your exam)
SELECT TO_CHAR(SYSDATE, 'Day') FROM Dual;
Responda
-
31.05.2013
-
Friday
-
31
-
31-05.2013
Questão 52
Questão
What will be the result of the following SQL statement? (SYSDATE is a date of your exam)
SELECT TO_CHAR(SYSDATE, 'DD.MM.YY') FROM Dual;{
Responda
-
31.May.2013
-
An error will occur
-
31.05.2013
-
31.05.13
Questão 53
Questão
When executed, this statement cannot be rolled back
Responda
-
ALTER TABLE
-
DROP TABLE
-
REMOVE TABLE
-
DELETE TABLE
Questão 54
Questão
When inserting data into a table form another table, the table names and columns must be the same.
Responda
- True
- False
Questão 55
Questão
When using LIKE condition which symbol is used to denote one character?
Responda
-
_
-
+
-
%
-
*
Questão 56
Questão
When using LIKE conditions which symbol is used to denote zero or many characters?
Responda
-
+
-
*
-
%
-
_
Questão 57
Questão
Which command is used to view the structure of the table LOCATIONS?
Responda
-
DESCRIBE LOCATIONS
-
SHOW STRUCTURE LOCATIONS
-
SELECT * FROM LOCATIONS
-
PRINT LOCATIONS
Questão 58
Questão
Which is right of the following clauses?
Responda
-
SELECT... WHERE ... ORDER BY ... GROUP BY
-
SELECT ... FROM ... GROUP BY ... ORDER BY ... WHERE
-
SELECT...FROM...WHERE...GROUP BY...ORDER BY
-
SELECT ... FROM ... WHERE ... ORDER BY ... GROUP BY
Questão 59
Questão
Which keyword is used to eliminate duplicate rows in the result?
Responda
-
DISTINCT
-
DESCRIBE
-
HAVING
-
GROUP BY
Questão 60
Questão
Which keyword is used to provide an alias to a column?
Responda
-
COLUMN
-
AS
-
ALIAS
-
IS
Questão 61
Questão
Which of the following clauses is used to limit the rows that are retrieved by the query?
Responda
-
WHERE
-
ORDER BY
-
FROM
-
GROUP BY
Questão 62
Questão
Which of the following functions finds the numeric position of a named character?
Responda
-
CONCAT
-
INSTR
-
TRIM
-
SUBSTR
Questão 63
Questão
Which of the following functions is not single-row function?
Responda
-
CONCAT
-
SUM
-
UPPER
-
ROUND
Questão 64
Questão
Which of the following functions joins two strings together?
Responda
-
CONCAT
-
TRIM
-
INSTR
-
SUBSTR
Questão 65
Questão
Which of the following is a concatenation operator?
Responda
-
&
-
||
-
*
-
+
Questão 66
Questão
Which of the following SQL statements will generate an error?
Responda
-
SELECT last_name Name FROM employees WHERE Name like 'K%'
-
SELECT last_name Name FROM employees ORDER BY Name
-
SELECT department_id Dep, COUNT(last_name) Num FROM employees GROUP BY department_id HAVING Num>5
-
SELECT department_id Dep, COUNT(last_name) FROM employees GROUP BY dep
Questão 67
Questão
Which of the following statements about aliases is NOT true?
Responda
-
The keyboard AS between an alias and a column name is optional
-
Aliases always require double quotation marks
-
Aliases immediately follows the column name
-
Aliases rename column heading
Questão 68
Questão
Which of the following statements is NOT true?
Responda
-
SQL statements are no case sensitive
-
Keywords cannot be abbreviated
-
SQL statement can be only one line
-
Keywords cannot be split across lines
Questão 69
Questão
Which statement discards all pending data changes
Responda
-
SAVEPOINT
-
COMMIT
-
DISCARD
-
ROLLBACK
Questão 70
Questão
Which symbol do you use if you need to choose all the columns from the table to the result query?
Responda
-
%
-
All
-
+
-
*
Questão 71
Questão
Which symbol is used to create a substitution variable?{
Responda
-
&
-
_
-
%
-
*
Questão 72
Questão
Write SQL statement for display the department numbers with more than employees in each dept.
Responda
-
Select deptno, count(deptno) from emp group by deptno having count(*)>3;
-
Select deptno, count(deptno) from deptno group by emp having count(*)>3;
-
Select deptno, count (emp) from deptno group by emp having count(*)>2;
-
Select deptno, count (deptno) from emp group by deptno having count(*)>2;
Questão 73
Questão
Write SQL statement for display the names of the employees who are working in the company for the past 5 years:
Responda
-
Select ename from emp where hiredate < add_month(sysdate,-60);
-
Select ename from emp where hiredate < add_month(sysdate,-5);
-
Select ename from emp where hiredate < add_month(sysdate,+60);
-
Select ename from emp where hiredate < add_month(sysdate,+5);
Questão 74
Questão
Write SQL statement for increase salary of all managers by 10%
Responda
-
Update emp set sal\=sal*1.1 where empno in (select mgr from emo);
-
Update emp set sal\=sal*0.1 where empno in (select mgr from emo);
-
Update emp set sal\=sal*0.1 where empno in (select emp from emo);
-
Update emp set sal\=sal*1.1 where empno in (select emp from emo);
Questão 75
Questão
You can add and drop columns from a table using the ALTER TABLE command.
Responda
- True
- False
Questão 76
Questão
You can nor (not?) selectively delete rows a table.
Responda
- True
- False
Questão 77
Questão
You can place the subquery in a number of SQL clauses, including the following:
I. WHERE clause
II. HAVING clause
III. FROM clause
Responda
-
I and II
-
I,II and III
-
I only
-
I and III
Questão 78
Questão
You can update only a single column at a time in a table.
Responda
- True
- False
Questão 79
Questão
You cannot drop a user if objects exist in the user's schema.
Responda
- True
- False
Questão 80
Questão
You cannot order the results of a set operation
Responda
- True
- False
Questão 81
Questão
______ clause can be used and is required in the subquery to perform Top-N analysis.
Responda
-
HAVING
-
ORDER BY
-
GROUP BY
-
WHERE
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