[[TracNav(TracNav/ISO15926Primer)]]

= Decouple an Application from a Confederation of Applications =

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In this example you have a number of applications that are connected directly to a common database.  Whenever one of the applications changes, care will have to be taken to mare sure it interacts properly with the database.  If your applications are commercial software, the vendors have little incentive to keep them compatible with your master database.  You wish to decouple an application from the master database to enable you to modify it independently of the rest of the applications.

[[Image(GettingStarted_Decouple01.JPG, 300px)]]

'''Figure 1 - Applications Mapped to a Common Database'''

In order to isolate, say, Application A so that you can update it independently, you will need to create a map between it and the common database.  Use ISO 15926-4 instead of making a custom map.

[[Image(GettingStarted_Decouple02.JPG, 350px)]]

'''Figure 2 - Map an Application to ISO 15926-4'''

=== Next ===

  * [wiki:ISO15926Primer_GettingStarted_Partner Expose Information to a Business Partner]

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