1. If the database resides in same server then use command like below
INSERT INTO DBName.dbo.Customer(Column1,Column2) VALUES('','')
2.If database resides in remote server.
As you told that you have DBName,Id password in one of your system table so using this value you can use OPENQUERY with dynamic SQL. For more information have a look
http://msdn.microsoft.com/en-us/library/ms188427.aspx[
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