BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Defining referential integrity not possible          BorlandTalk.com Forum Index -> C++ Builder Databases (Desktop) View previous topic :: View next topic   Author Message Uwe Mueller Guest Posted: Sun Sep 05, 2004 6:15 pm    Post subject: Defining referential integrity not possible Hello, I have two tables (of the order/items type as in BCDEMO) on which I want to define referential integrity with the Borland Database Desktop. But it seems to not let me do this. When I am in the dialogue for referential integrity and I define the foreign key in both tables the OK button is still grayed. Both keys have the same data type (integer), they have the same name (even if I don't think that's necessary) and it generally looks like the example in BCDEMO. But it doesn't let me save it. I have C++ Builder 5.0 Prof, DBD 7.0, Paradox driver 4.0. Does anyone has an idea? Thx in advance Uwe Back to top Uwe Mueller Guest Posted: Sun Sep 05, 2004 10:22 pm    Post subject: Re: Defining referential integrity not possible Uwe Mueller wrote: Quote: I have two tables (of the order/items type as in BCDEMO) on which I want to define referential integrity with the Borland Database Desktop. But it seems to not let me do this. When I am in the dialogue for referential integrity and I define the foreign key in both tables the OK button is still grayed. Both keys have the same data type (integer), they have the same name (even if I don't think that's necessary) and it generally looks like the example in BCDEMO. But it doesn't let me save it. Ok, problem already solved. I defined too many keys in the order table (I obviously didn't understand correctly what keys are for), and until each key has a foreign key assigned the OK button remains grayed. 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