what is ment by Packages ?

Packages provide a method of encapsulating related procedures, functions, and associated cursors and variables together as a unit in the database.

package that contains several procedures and functions that process related to same transactions.

A package is a group of related procedures and functions, together with the cursors and variables they use, Packages provide a method of encapsulating related procedures, functions, and associated cursors and variables together as a unit in the database.