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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. What does the INTERSECT operator do in SQL?

A) Returns rows that are present in both queries
B) Combines all rows from two queries without any conditions
C) Combines rows from two queries and includes all duplicates
D) Returns rows from the first query that are not present in the second query

2. What does the COMMIT statement do in SQL?

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

3. How can you ensure that data is sorted in descending order in a SQL query?

A) Use the ASC keyword
B) Use the DESC keyword
C) Use the ORDER keyword
D) Use the DISTINCT keyword

4. Which of the following is a valid reason to create a synonym?

A) To improve query performance
B) To automatically generate numeric values for a column
C) To enforce unique constraints on a table
D) To provide simplified and consistent access to an object

5. What is the default order of evaluation when multiple SET operators are used in a query?

A) UNION, MINUS, INTERSECT
B) INTERSECT, UNION, MINUS
C) UNION, INTERSECT, MINUS
D) INTERSECT, MINUS, UNION

Solutions: