Enterprise bean deployment tool schema

There are three options for mapping entity beans to a backend database schema: top-down, meet-in-the-middle, and bottom-up.

With the top-down option, the deployment tools generate a backend schema directly from the provided abstract persistence schema (abstract accessor methods plus the deployment descriptor elements) and then map the elements in the abstract persistence schema to the generated backend schema. See the section Generating a top-down mapping of the WebSphere Studio Application Developer (WSAD) documentation for details.

With meet-in-the-middle mapping, you employ a tool to manually map elements from the abstract persistence schema to elements in an existing backend schema. WSAD provides a meet-in-the-middle mapping tool. See the section Generating a meet-in-the-middle mapping of the WSAD documentation for details.

With the bottom-up approach, the tools take, as input, an existing backend database schema and generate equivalent entity beans and then map the elements of the two schemas. See the section Generating a bottom-up mapping of the WSAD documentation for details.




Searchable topic ID:   mapejbs
Last updated: Jun 21, 2007 8:07:48 PM CDT    WebSphere Business Integration Server Foundation, Version 5.0.2
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