Why Sharepoint create Profile automatically?

im using sharepoint 2010 with claimsAuthentification (SQLMembership Provider)

when user is authentified the first time, sharepoint create automatically a profile for this

user, pl开发者_开发问答ease how can i avoid this.

thx

You can't with the out of the box SqlMembershipProvider, SharePoint needs to store user data somewhere, it just just hooks into the provider. You would need to write your own MembershipProvider to accomplish this.