Oracle 1Z1-171 Exam : Oracle Database 23ai SQL Associate

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Oracle 1Z1-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

Question 1

What is the primary purpose of an index in SQL?

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

Question 2

What is the purpose of the SAVEPOINT statement?

A. To set a point within a transaction to which a rollback can occur
B. To restart a transaction
C. To delete data temporarily
D. To save changes permanently

Question 3

Which command can be used to rename a table in Oracle Database?

A. RENAME TABLE
B. MODIFY TABLE NAME
C. RENAME
D. ALTER TABLE RENAME

Question 4

What is the difference between UNION and UNION ALL?

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

Question 5

What is required for the queries combined by a SET operator to work correctly?

A. Both queries must include the WHERE clause.
B. The tables must be joined using a primary key.
C. The result sets must have the same number of columns and compatible data types.
D. Both queries must use the GROUP BY clause.

Solutions: