A Question “SQLEXPRESS instance name is fixed for Express edition only ?” is running in my mind. SO I have decide to test it.

First I have tried to install SQL server Evolution Enterprise edition with instance name “SQLEXPRESS” & it worked.

Now I tried to install SQL Server Express edition & It allows me install Express edition with different edition name.

You can see that I am having SQLEXPRESS instance name with Enterprise Evolution edition & SQLEXPRESS2008 (different name) instance with Express edition.

But it’s good to use default things & install Express edition with SQLEXPRESS instance name. It’s easy to understand.