Curso Firebird SQL 06 - Foreign key Restrict e Cascade HD

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Uma chave estrangeira em uma tabela aponta para uma chave PRIMARY em outra tabela. Serve para fazer a integridade dos dados. ### Os comandos SQL para não ter que copiar estão no blog, segue o link: ### Blog Infocotidiano com Comandos SQL: goo.gl/uYaaie

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Curso Firebird SQL 06 - Foreign key Restrict e Cascade HD

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