SharePoint form-based authentication with custom database -

I have a SharePoint site and I want to use form-based authentication, it is not by default like Windows .

For this I have read that from my site I get Central Administration and Web. Config to Web Configure must be modified, properly configured with subscription and roll manager tag.

But if I use it:

& lt; Membership & gt; & Lt; Providers & gt; & Lt; Add name = "MyProvider" type = "System.Web.Security.SqlMembershipProvider, System.Web, version = 2.0.0.0, culture = neutral,
PublicKeyToken = b03f5f7f11d50a3a" ... /> & Lt; / Providers & gt; & Lt; / Subscription & gt;

System.Web.Security.SqlMembershipProvider requires a database generated from the ASP.NET SQL Server Setup Wizard (aspnet_regsql.exe), and this is my problem! I want to use other databases with the ConsumTable Table 'User' where authentication requires usernames and passwords. How can I do this?

Thank you in advance

If you have a custom database structure, Custom writing will be required. I suggest starting with MSDN.