Schema Requirements

Before you install any of the Communications Services products, you need to understand which schema you will use. The schema is the set of definitions describing what types of information can be stored as entries in the directory. Two schema choices, Sun Java^TM System LDAP Schema 1 and Sun Java^TM System LDAP Schema 2, are available and supported with Communications Services. Your choice of schema depends on the following criteria:

Use Schema 2 if you:

• Want to use Access Manager 6 2005Q4 (formerly Identity Server), either for user provisioning or single sign-on (SSO)

• Are installing Communications Services components for the first time

• Are integrating Communications Services with other Java Enterprise System products, such as Portal Server

You do not have to use Access Manager 6 to provide SSO. If you choose, you can still use the trusted circle type of SSO, which does not rely on Access Manager 6.

Use Schema 1 if you:

• Have an existing version of any of the Communications Services components, for example, if you are upgrading from Messaging Server 5.2

• Do not need to provision users through Access Manager (unless Access Manager SSO is also a requirement)

• Want to use Sun ONE Delegated Administrator (formerly called iPlanet^TM Delegated Administrator) to do your user provisioning

See Chapter 8, Understanding Schema and Provisioning Options for more information on schema choices.