OIM Terminologies

Resource:
    A resource is a logical entity in Oracle Identity Manager that can be provisioned to a user or an organization in Oracle Identity Manager.
        Ex: Microsoft Active Directory (AD)
            Microsoft Exchange
            SAP
            Unix
            DB
Resource Forms :
    Forms represent a collection of attributes associated with the resource
        Ex : Forms represent a collection of attributes associated with the resource
       
Account :
    Accounts are actual instances of a resource that are created and provisioned to a user or organization in Oracle Identity Manager.
        Ex: e-mail account
           
IT Resource Type:
    IT resource type is a logical entity in Oracle Identity Manager used to model a physical target and all its attributes including (but not limited to) the connectivity information
    and the credentials required to connect to the physical computer.
        Ex:    IT resource type AD server

IT Resource Instance:
    These are actual instances of specific IT resource type that represent the actual physical target.
   
Account Discriminator :
        Account discriminator is a collection of attributes on a form that uniquely identifies the logical entity on which accounts are created.