It's the scheme whereby the DB keeps concurrent users from stomping each other's data. So, when you switch DBs, you find things like locks where you never saw them before. ----- Original Message ----- From: Brian Kelsay <Brian.Kelsay@kcc.usda.gov> Date: Thursday, March 10, 2005 12:43 pm Subject: Re: DB2

What is a concurrency model?

It's the scheme whereby the DB keeps concurrent users from stomping each other's data. So, when you switch DBs, you find things like locks where you never saw them before.