CDM set increment primary key

Some friends in the PD built with the conceptual model, that can not be set increment primary keys, but also after generating the PDM, a separate set again, a lot of trouble.

Auto-increment primary keys are generally plastic, int, long

If we are to build a solid model in the CDM, will increment the primary key is set to Serial, given the length of the set, to meet the PDM has been generated by self

 

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Origin www.cnblogs.com/zerommc/p/12421090.html