A Package is a collection of related procedures, functions, variables and other package constructs together as a unit in the database.

package is collection of logicaly related procedure,funtion,varialbles

wich are stored all togther.Package implemnt the concept of Object orintation Encalsulatio,Datahiding andd polymorphism disadvantage of the package when a single function or procedure is called from package it also compiles all its related obejcts and get it store in SGA.