oracle predefined roles vs ms sql roles

[golo]

Hi! Can anyone say which ms sql server predefined roles are similar to the following oracle predefined roles: dba, connect, resource. I already know that sysadmin in MS SQL Server is the same as DBA in Oracle but what about the rest?
Thanks a lot.

[oraclable]

Basically, if connect & resource are granted to a user, this user can do the followings only in the database in which this user can act:

connect(ORACLE):
create session, alter session, create synonym, create view, create database link, create table, create cluster and create sequence

resource(ORACLE):
create table, create cluster, create sequence, create trigger, create procedure, create type, create indextype and create operator

This is pretty much the same for a SQL SERVER user having the db_owner: (little bit more)

db_owner(SQL SERVER):
Managing database access,Changing database options,Backing up and restoring the database contents,
Granting and revoking database permissions,Creating and dropping database objects

So, I would say: db_owner could be used in SQL SERVER as an equivalent of connect & resource in ORACLE.