问题
Every time I create a derby database there are several schemas including the APP schema and a schema with the same name of the USERNAME. Which schema should i be using, the APP or the USERNAME schema? Why is the APP schema introduced if the USERNAME schema is set as the default schema. Hopefully this is a quick question for a derby pro. :)
回答1:
You can use any schema you want. If you don't explicitly specify a schema, Derby picks a default schema for you. http://db.apache.org/derby/docs/10.8/ref/rrefsqlj32268.html. I'm not sure why you are getting a schema with the same name as your database; are you setting that schema intentionally?
来源：https://stackoverflow.com/questions/11040213/in-derby-should-i-be-using-the-app-schema-or-the-mydbname-schema