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Oracle 1Z1-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. What is the purpose of using external tables in Oracle Database?

A) To manage data stored in external files using SQL
B) To store backup copies of database tables
C) To improve the performance of complex queries
D) To create temporary tables for session-specific data

2. What will the following SQL query return?
SELECT TRUNC(15.678, 2) AS truncated_value FROM dual;

A) 15.68
B) 15.6
C) 15.678
D) 15.67

3. How can a synonym benefit database design?

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

4. What does the NEXTVAL pseudocolumn do in SQL?

A) Deletes the sequence from the database
B) Resets the sequence to its starting value
C) Retrieves the next value in a sequence and increments the sequence
D) Retrieves the current value of a sequence without incrementing it

5. How does SQL handle NULL values in arithmetic expressions?

A) Treats them as zero
B) Produces an error
C) Treats them as the largest possible number
D) Produces a NULL result

Solutions: