The UMN database was decidedly absent from the Japanese release of Episode 2, and a very unfortunate loss at that (especially for new players). Many players have been hoping that it will be added back in for the US release, it's presence or absence in the US version has not been confirmed but it isn't mentioned on the newly opened
official site. However, the new official site has a lot of UMN database type information on characters, weapons, and mechs.