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23
DDL Integritätsbedingungen
• UNIQUE
• NOT NULL (implizit bei PRIMARY KEY)
• DEFAULT <Default-Wert>
• CHECK (<<Attributname> <Prüfbedingung>)
• PRIMARY KEY
• FOREIGN KEY REFERENCES <Tabellen-Name> (<Attribut-Name>)
• NOT NULL (implizit bei PRIMARY KEY)
• DEFAULT <Default-Wert>
• CHECK (<<Attributname> <Prüfbedingung>)
• PRIMARY KEY
• FOREIGN KEY REFERENCES <Tabellen-Name> (<Attribut-Name>)
