Oracle

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ORACLE

ASSESSMENT

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

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

AVG

SUM

MIN

MAX

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

Data Definition Language

Data Description Language

Database Definition Language

Database Description Language

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

ALLOW

GRANT

GIVE

PERMISSION

4. 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

5. 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

6. In Oracle, what is a primary 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

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

To update records

To retrieve data

To delete records

To insert records

8. 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

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

SUM

MIN

AVG

MAX

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

To undo changes made by the current transaction

To permanently delete data from a table

To commit the current transaction

To create a savepoint

11. 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

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

Descending

Ascending

Random

Alphabetical

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

DELETE

REMOVE

DROP

TRUNCATE

14. What does SQL stand for?

Structured Language

Standard Query Language

System Query Language

Sequential Query Language

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

MIN

AVG

MAX

SUM

16. 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

17. 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

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

COUNT

SUM

AVG

MAX

19. 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

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

REMOVE TABLE

DELETE TABLE

DROP TABLE

ERASE TABLE

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