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Oracle Database 23ai SQL Associate Sample Questions:

1. What does the following SQL statement do?
ALTER TABLE employees DROP COLUMN salary;

A) Deletes the employees table
B) Drops the salary column from the employees table
C) Removes duplicate rows from the employees table
D) Sets the salary column to NULL for all rows

2. Which SQL function calculates the number of months between two dates?
Response:

A) MONTHS_BETWEEN
B) DATE_DIFF
C) TIME_DIFF
D) DATE_CALC

3. What is the purpose of using external tables in Oracle Database?

A) To create temporary tables for session-specific data
B) To manage data stored in external files using SQL
C) To improve the performance of complex queries
D) To store backup copies of database tables

4. Which clause is used to allow a user to grant a privilege to others?

A) WITH ADMIN OPTION
B) WITH GRANT OPTION
C) WITH SHARE OPTION
D) WITH SELECT OPTION

5. Which SQL statement is used to create a table?

A) CREATE TABLE
B) ADD TABLE
C) INSERT
D) ALTER TABLE

Solutions: