Login to Plesk control panel with your Plesk user
Once logged in to Plesk, click on “Database” button under Custom Website box.
On the next screen , click on “Add a new database” button.
On the next screen under General section in Database name field, add the database name.
Under Database Type select Microsoft SQL Server as we are going to add MSSQL database.
Scroll down a bit and under Users section, add a user for the database that we are creating and then click OK button.