Oracle

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ORACLE

ASSESSMENT

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

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1. What is the purpose of the ORDER 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

2. What is the purpose of the WHERE clause in a SQL query?

To specify the order of the result set

To filter the rows returned by a query

To join tables

To group rows based on a column

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

ALLOW

GRANT

GIVE

PERMISSION

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

Data Manipulation Language

Database Modification Language

Data Modeling Language

Database Management Language

5. Which data type is used to store variable-length character strings in Oracle?

CHAR

VARCHAR

CLOB

BLOB

6. 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

7. 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

8. What is the purpose of the CONSTRAINT keyword in Oracle?

To specify a default value for a column

To enforce referential integrity

To create a virtual column

To filter rows in a query

9. What is the purpose of the OUTER JOIN in Oracle?

To exclude rows that do not meet the condition

To include only rows that meet the condition

To include all rows from both tables, even if there is no match

To filter rows based on a condition

10. 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

11. What does SQL stand for?

Structured Language

Standard Query Language

System Query Language

Sequential Query Language

12. What is the purpose of the ROWID in Oracle?

To uniquely identify a row in a table

To store the row count in a table

To specify the order of the result set

To create a primary key

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

SUM

MIN

AVG

MAX

14. What is the purpose of the ROLLBACK statement in Oracle?

To undo changes made by the current transaction

To permanently delete data from a table

To commit the current transaction

To create a save point

15. What is the purpose of the INDEX in Oracle?

To define a unique constraint

To enforce referential integrity

To improve query performance

To create a virtual column

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

CHANGE

MODIFY

UPDATE

ALTER

17. Which statement is used to delete data from a table in Oracle?

DELETE

REMOVE

DROP

TRUNCATE

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

MIN

AVG

MAX

SUM

19. What is the default sorting order in an ORDER BY clause in Oracle?

Descending

Ascending

Random

Alphabetical

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

COUNT

SUM

AVG

MAX

5 out of 4

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