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Oracle 1Z0-171 Exam Syllabus Topics:

Oracle Database 23ai SQL Associate Sample Questions:

1. What is the result of using the following SQL query?
SELECT 100 + NULL AS result;

A) 0
B) NULL
C) 100
D) An error

2. Which of the following is true about foreign key constraints in SQL?

A) They enforce the uniqueness of values in a column.
B) They define a relationship between two tables.
C) They ensure that a column only contains NULL values.

3. Which SQL keyword is used to define a substitution variable in a SQL statement?

A) SUBSTITUTION
B) SET
C) VAR
D) DEFINE

4. How is the LOCALTIMESTAMP function different from CURRENT_TIMESTAMP?

A) LOCALTIMESTAMP omits time zone information, while CURRENT_TIMESTAMP includes it.
B) LOCALTIMESTAMP returns only the date, while CURRENT_TIMESTAMP returns the date and time.
C) Both functions are identical in output.
D) LOCALTIMESTAMP does not include fractional seconds, while CURRENT_TIMESTAMP does.

5. What is the primary purpose of a primary key in a relational database?

A) To store duplicate data in a table
B) To sort data in ascending order
C) To establish relationships between tables
D) To uniquely identify each record in a table

Solutions: