$24.$ Which of the following best defines a variable in SQL$?$

$*$

$30$ points

A variable is a container used to store a value temporarily within a SQL statement or batch.

A variable is a database object that stores data persistently and can be accessed from multiple SQL statements.

A variable is a special type of data type used to define the structure of a table or view in a database.

A variable is a reserved keyword used to indicate the beginning or end of a SQL statement or block.