Deploying a website and its database

<div> im new in asp.net and im trying to test-deploy a website along with the database, so i was told that if i wanna add the database to my project for deplyong "publishing", i should go to properties of the project, "Package/publish SQL" tab and and click on "import from Web.config" to include my database in to the database entries box.
first of all...when i try "import from web.config" it tells me "there was no connection string found in the Web.config".
i also have to say,  i used ADO.Net connections from code behind, i never added my database in my web.config! is it wrong? do i need to add my database in my web.config? if its not wrong, how can i deploy my database with project?
tq in advance
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