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Oracle Database 23ai SQL Associate Sample Questions:

1. What will the following query do?
DELETE FROM employees
WHERE department_id = 20;

A) Delete all rows in the employees table
B) Delete the department_id column in the employees table
C) Delete all rows where department_id is 20
D) Raise an error because DELETE cannot use a WHERE clause

2. What is the relationship between SQL and a relational database?

A) SQL is used to create flat file databases.
B) SQL is a scripting language used for file manipulation.
C) SQL is a standard query language used to interact with relational databases
D) SQL is a file system used to store relational database data.

3. What will the following SQL statement output?
SELECT first_name || ' ' || last_name AS full_name FROM employees;

A) A syntax error
B) Concatenated first and last names with spaces in between
C) Concatenated first and last names without spaces
D) Only the first names of employees

4. Which of the following data dictionary views provides information about constraints on tables?

A) All of the above
B) ALL_CONSTRAINTS
C) USER_CONSTRAINTS
D) DBA_CONSTRAINTS

5. The column data type is converted to a primary key.

A) CREATE ALIAS
B) CREATE INDEX
C) CREATE SEQUENCE
D) CREATE SYNONYM

Solutions: