Thread Safe Custom Membership Provider

Hello all,  I just created a custom membership provider I would like to know if I can make calls to my data access layer and not put my data access code inside  the membership methods will that prevent my custom membership provider from being thread safe, for example:


public override MembershipUser CreateUser(string username,
string password, string email,
out MembershipCreateStatus status)
{
// DB calls to my data layer
}

v.s.

public override MembershipUser CreateUser(string username,
string password, string email,
out MembershipCreateStatus status)
{
// data access
}

Thanks again
...