http://en.wikipedia.org/wiki/Unique_key <<A unique key or primary key comprises a single column or set of columns.>>
Jacques From: "zhiyongcui" <[email protected]>
I'm a newbie, I am reading the The Open For Business Project: Entity Engine Guide. In the View Entity Modeling, I was wondering a entity could have two primary keys at "For example, if an OrderHeader entity has an orderId primary key and an OrderLine entity has an orderId primary key and an orderLineSeqId primary key". Who can tell me if it's really true? -- View this message in context: http://n4.nabble.com/About-Primary-Keys-tp604073p604073.html Sent from the OFBiz - User mailing list archive at Nabble.com.
