Create unique constraint with null columns Create unique constraint with null columns sql sql

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Create unique constraint with null columns

sql postgresql database-design null referential-integrity

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sql

Maintaining Referential Integrity - Good or Bad?

sql database-design referential-integrity audit-trail

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How can I break referential integrity briefly, within a transaction, without disabling the foreign key constraint?

sql oracle hierarchical-data referential-integrity

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mysql circular dependency in foreign key constraints

mysql sql database-design referential-integrity

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SQL Server: how to know if any row is referencing the row to delete

sql sql-server tsql foreign-keys referential-integrity

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When is referential integrity not appropriate?

sql database database-schema referential-integrity schema-design

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mysql Multiple Foreign Keys in a Table to the Same Primary Key

mysql sql foreign-keys primary-key referential-integrity

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Simple constraint to limit an Oracle table to a single row

sql oracle database-design oracle11g referential-integrity

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INSTEAD OF Triggers and CASCADE paths

sql sql-server triggers cascade referential-integrity

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Delete parent if it's not referenced by any other child

sql postgresql foreign-keys common-table-expression referential-integrity

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