On this wizard page, specify a connection string. Additionally, this page requires you to specify whether or not to store the connection string in the application's configuration file.
See Connection Strings in the ADO.NET Entity Framework for more information.
When specifying a custom connection string in the Data Source wizard, the password is obscured with asterisk characters (their number does not correspond to the actual length of the password). To learn more, see Data Access Security.
Click Next to proceed to the next wizard page. If the current Entity Framework model provides stored procedures, go to the Bind to a Stored Procedure page; otherwise, proceed to the Select a Data Member page.