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Getting unique numbers for one numberseries (table)?

Question asked by strune on Jul 22, 2009
Latest reply on Jul 22, 2009 by etripoli

Title

Getting unique numbers for one numberseries (table)?

Post

I have 4 tables: District ----> Owner ----> Calvesnumbers <---- Fencenumbers

 

District-table is related to Owner-table (owner has district as a field). Owner-table i related to Calvesnumbers-table (Calvesnumber has Owner as a field) and Calvesnumbers-table is related to Fencenumbers-table (Calvesnumbers has Fencenumbers as a field).. Everything is OK so far..

 

But I would like the Calvesnumbers-table to have unique calvesnumbers, based on unique Fencenumbers. This means that Fencenumber 1 can have a unique calvesnumber 1, and furthermore Fencenumber 2 can also have calvesnumber 1. But never can the Fencenumber 1 have calvesnumber 1 twice in the same Fencenumber.

 

Should i make another table here, or something else?! 

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