Publish and Subscribe methodology

In the Publish and Subscribe methodology, a central database is designated as the publisher. The publisher database contains all shared objects. Subscriber databases request subsets of the data available from the publisher, and the publisher sends the data.

The transfer of data is one way, from the publisher to each subscriber. However, the publisher can collect shared data from other databases using DCM operations or the migrate tool.

Use a Publish and Subscribe methodology when many databases must share software components (libraries, DLLs, header files), and the shared components are not developed in the subscriber databases.

Publish and Subscribe methodologyThis image shows the Publish and Subscribe methodology for DCM.


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