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Unanswered: Embedded Apache Derby record guids
I am working on an application that is going to run a tomcat front end and an embedded derby db back end. i need to devise a unique record identifier so i can easily import, export, and backup the db.
I don't think incremented id fields area good idea since there could be a lot of backing up, restoring, and possible merging of data.
would a good unique record id be something like ...
mm being minute.
MSL being millisecond.
I could create a unique field flag on the id column to make sure the ids for the table are unique. Does anyone see a problem with this?
I have done a ton of research but for this particular application I could not find a good solution. I need a unique record id that is flexible and generated by my program.
Of course there is also GUIDs.