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wct

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  1. Hello, can your DB-System no "primary key"? In your group-table the group-id and the user-id should be the primary key! This protects a duplicate tuple. If i understand you right, is it what you will. Further, you should check, if you can use a "foreign-key". This means the user-id can only inserted if the user-id exists in the user-table. What DB-System is used ? Hagen
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