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Oracle Database 23ai SQL Associate Sample Questions:

1. Which SQL clause is used to specify the source table in a query?

A) GROUP BY
B) WHERE
C) SELECT
D) FROM

2. The column data type is converted to a primary key.

A) CREATE INDEX
B) CREATE ALIAS
C) CREATE SEQUENCE
D) CREATE SYNONYM

3. What is the primary purpose of an index in SQL?

A) To store metadata about a table
B) To improve the performance of data retrieval queries
C) To ensure uniqueness of values in a column
D) To enforce data integrity constraints

4. Which command grants a user the ability to query data from a specific table?

A) GRANT SELECT ON table_name TO user_name;
B) GRANT ALL ON table_name TO user_name;
C) ALLOW SELECT ON table_name TO user_name;
D) ENABLE SELECT ON table_name TO user_name;

5. Which statement can be used to undo changes made in a transaction?

A) SAVEPOINT
B) MERGE
C) COMMIT
D) ROLLBACK

Solutions: