Oracle

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ORACLE

ASSESSMENT

(YOU HAVE ONLY 30 MINUTES TO COMPLETE THIS PART [20 Questions])

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1. In Oracle, what is the purpose of the SELECT statement?

To update records

To retrieve data

To delete records

To insert records

2. Which function is used to find the total number of rows in a table in Oracle?

COUNT

SUM

AVG

MAX

3. Which statement is used to remove a table from the database in Oracle?

REMOVE TABLE

DELETE TABLE

DROP TABLE

ERASE TABLE

4. In Oracle, what does the acronym PL/SQL stand for?

Procedural Language/Structured Query Language

Programming Language/Standard Query Language

Procedure Language/Structured Question Language

Procedural Logic/Structured Query Language

5. What does DML stand for in the context of Oracle?

Data Manipulation Language

Database Modification Language

Data Modeling Language

Database Management Language

6. In Oracle, what does the term "DDL" stand for?

Data Definition Language

Data Description Language

Database Definition Language

Database Description Language

7. What is the purpose of the GROUP BY clause in Oracle?

To filter rows in a query

To sort the result set

To group rows based on a column

To join tables

8. Which statement is used to update data in a table in Oracle?

CHANGE

MODIFY

UPDATE

ALTER

9. What is the purpose of the UNION ALL operator in Oracle?

To combine the result sets of two or more SELECT statements

To join tables based on a condition

To filter rows in a query

To exclude duplicate rows from the result set

10. In Oracle, what is the purpose of the SAVEPOINT statement?

To undo changes made by the current transaction

To create a checkpoint within a transaction

To commit the current transaction

To create a subquery

11. Which keyword is used to create an alias for a table or a column in Oracle?

ALIAS

NAME

RENAME

12. Which SQL operator is used for pattern matching in Oracle?

BETWEEN

EXISTS

13. Which statement is used to grant privileges to a user in Oracle?

ALLOW

GRANT

GIVE

PERMISSION

14. What is the purpose of the EXISTS operator in Oracle?

To check if a table exists in the database

To check if a column exists in a table

To check if a value exists in a column

To check if a subquery returns any rows

15. Which function is used to find the minimum value in a column in Oracle?

MIN

AVG

MAX

SUM

16. Which SQL function is used to find the highest value in a column in Oracle?

SUM

MIN

AVG

MAX

17. Which statement is used to add a new column to an existing table in Oracle?

ADD COLUMN

CREATE COLUMN

ALTER TABLE ADD COLUMN

INSERT COLUMN

18. Which SQL function is used to find the average value in a column in Oracle?

AVG

SUM

MIN

MAX

19. What is the purpose of the NVL function in Oracle?

To convert a value to uppercase

To replace NULL with a specified value

To concatenate two strings

To find the length of a string

20. In Oracle, what is a foreign key used for?

To enforce uniqueness in a column

To establish relationships between tables

To provide a default value for a column

To sort the result set

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