JScript Code to connect Sql server management and Testcomplete

This will help you connect TestComplete to an MS SQL Server database.

https://support.smartbear.com/testcomplete/docs/testing-with/working-with-external-data-sources/databases/examples/connecting-to-ms-sql-server-using-ado.html

If you are looking for a connection to the MS SQL Server Management Studio tool, I do not see it in this list of integrations.

https://smartbear.com/product/testcomplete/integrations/