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ALT-Taste m; Sekundärschlüssel m | |||
Sekundärdaten n | |||
Alternativschlüssel m (A candidate key that is not designated as the primary key and is used to uniquely identify records in a database table) | |||
Taste mit doppelter Funktion |
alternate key : 3 phrases in 1 subject |
General | 3 |