- What is database schema decomposition?
- Why do we need decompositions?
What is database schema decomposition? Why do we need decompositions?
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Probably what is meant by this is that you start with one general schema for your database and decompose this into more specific schemas.
A good choice of more specific schemas can be determined using FK constraints defined on the schema, like join dependencies etc.
Why do you need it? I believe it significantly helps with normalization and manageability.