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Oracle Database 23ai SQL Associate Sample Questions:

1. What does the COMMIT statement do in SQL?

A) Rolls back changes to a previous state
B) Discards all pending changes in the transaction
C) Begins a new transaction
D) Saves all pending changes to the database permanently

2. Which function is used to extract the year from a date in SQL?

A) TO_YEAR(date)
B) GET_YEAR(date)
C) EXTRACT(YEAR FROM date)
D) YEAR(date)

3. Which data dictionary view lists all indexes created by the current user?

A) INDEX_LIST
B) DBA_INDEXES
C) USER_INDEXES
D) ALL_INDEXES

4. Which of the following statements is true about constraints in Oracle Database?

A) Constraints can be added or modified using the ALTER TABLE statement.
B) Constraints can only be added when creating a table.
C) Constraints are automatically dropped when rows are deleted.
D) Constraints cannot reference other tables.

5. What is a SELF JOIN in SQL?

A) A join used for Cartesian products
B) A join that does not require a WHERE clause
C) A join of a table with itself
D) A join between tables with identical structures

Solutions: