Hi exxos, I don't quite understand your question. What do you consider a unique column?
Some databases allow integer columns that are automatically populated from a sequence (e.g. identity columns in Microsoft SQL). Another feature in Microsoft sql is the data type "uniqueidentifier" which is a guid that will be automatically generated for each row. For those two cases Empire-db offers the data types DataType.AUTOINC and DataType.UNIQUEID. The exact implementation however is database specific. The Oracle driver e.g. will create a number column and automatically create a sequence for AutoInc columns (on DDL generation). Does this answer help you? Regards Rainer Exxos wrote: > from: exxos [mailto:[email protected]] > to: [email protected] > re: How to tell that a rows is UNIQUE ? > > Hello, > > At the colomn declartion in DBTable, how to tell that a colomn is unique ? > (I'm not talking about primaries keys) > > Regards, > exxos.
