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Oracle Database 23ai SQL Associate Sample Questions:

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

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

2. What does the following SQL statement do?
CREATE TABLE employees (
employee_id NUMBER PRIMARY KEY,
first_name VARCHAR2(50),
hire_date DATE NOT NULL
);

A) Creates a table with no constraints
B) Creates a temporary table
C) Creates a table with only VARCHAR2 and DATE columns
D) Creates a table with a primary key and a NOT NULL constraint

3. Which command is used to add a new column to an existing table?

A) MODIFY COLUMN
B) ADD COLUMN
C) ALTER COLUMN
D) ALTER TABLE

4. Which type of INSERT statement allows inserting rows into multiple tables using a single SELECT query?

A) Insert rows into multiple tables simultaneously
B) Insert rows into a single table based on values in other tables
C) Insert rows into a table only when a condition is met
D) Insert rows into multiple tables without conditions

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

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

Solutions: