A package has a 4 part name:

location: collection id: package name: version

The collection id is not a place but rather a qualifier that allows a group of packages (i.e. those bound to that collection) to be referred to as a unit. A collection serves the same purpose to packages that a schema serves to tables.

could u pls expalin a little more on

location

collection

package

version

regards

Gokul.