How to add "on delete cascade" constraints?

How to add "on delete cascade" constraints?

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Postgresql: Conditionally unique constraint

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Constraint name update in PostgreSQL

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PostgreSQL: default constraint names

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Postgres: Add constraint if it doesn't already exist

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How to drop all NOT NULL constraints from a PostgreSQL table in one go

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PostgreSQL - disabling constraints

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Adding named foreign key constraints in a SQL Create statement

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Adding an one-out-of-two not null constraint in postgresql

sql postgresql constraints database-schema

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Why can I create a table with PRIMARY KEY on a nullable column?

postgresql constraints primary-key ddl postgresql-9.3

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Postgres constraint ensuring one column of many is present?

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CONSTRAINT to check values from a remotely related table (via join etc.)

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How to get the name of a unique constraint in postgresql?

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Laravel Eloquent truncate - Foreign key constraint

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How to write a constraint concerning a max number of rows in postgresql?

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