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Oracle Database 23ai SQL Associate Sample Questions:

1. How can a synonym benefit database design?

A) It provides a consistent reference to database objects, even if their underlying names change.
B) It improves query execution time.
C) It enforces constraints on table columns.
D) It allows the renaming of columns in a table.

2. Which function is used to convert a string to uppercase in SQL?

A) TO_UPPERCASE
B) UPPER
C) CASE_UPPER
D) CONVERT_UPPER

3. Which of the following is an example of an object privilege?

A) DROP DATABASE
B) CREATE TABLE
C) ALTER USER
D) SELECT ON table_name

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

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

5. What is the difference between UNION and UNION ALL?

A) UNION works with subqueries, while UNION ALL does not.
B) UNION includes all rows, while UNION ALL removes duplicates.
C) UNION removes duplicates, while UNION ALL includes all rows, including duplicates.
D) UNION combines columns, while UNION ALL combines rows.

Solutions: