Create a User for SQL Server 2008 Express Edition
How to set a user to access on a db:
- Open Management Studio
- Go on properties of the server ex: SRV-2008\SQLEXPRESS
- Select mixed mode (SQL Server and Windows Authentication). Click OK.
- Always in Studio Management, add a new connection ( unroll security)
- In general, enter a name for the account and click on "SQL Server authentication". Enter a password and uncheck "Keep the password policy".
- Assign roles.
You can now use this user in a connection string or in credentials to remote a instance SQL.