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Introducing the Meta Catalog : Concepts : Local and master catalogs
 

Local and master catalogs

In many development environments, you do not have the complete application source code on your local machine. Environments that include a source code management (SCM) system are like this. However to gain the most advantage from a catalog, it should incorporate information on your entire application.
The OpenEdge Meta Catalog supports linking catalogs to your workspace in two modes:
Mode
Description
Local
A local catalog is specific to your workspace. It includes information only from the projects you specify in that workspace. You can update the contents of a local catalog at any time.
You can create more than one catalog in a workspace, using each to store information for a particular project, content builder, or other criteria.
Master
A master catalog exists outside your workspace. You have read-only access in this mode. Changes to your local files do not affect the contents of a master catalog. A group of developers can all use the same master catalog.
A good use for a master catalog is to index all resources in a SCM system. Each developer can perform impact analysis across an entire application without needing all the source-code locally. The catalog could update its contents each time a changed file is checked into the SCM or at scheduled times. The SCM administrator builds a catalog database and then sets up scripts to update it appropriately using the Meta Catalog command-line utility.