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Adding custom constraints on a postgres database - Mailing list pgsql-admin

From Debraj Manna
Subject Adding custom constraints on a postgres database
Date
Msg-id CAF6DVKMxbfsuK65SgrNdoBnhWdmx86Sku+Th1e5-QQWx_oncRg@mail.gmail.com
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Can someone let me know if there is a way I can add some custom rules/constraints on a Postgres database? 

For example, all tables in a database should have a primary key specified. If someone is trying to violate the rules specified then the SQL command should fail.

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