Explain Organization in wcs

Organizations

An orgEntity  is a member in MEMBER’s table with type –O.
It can be divided into Organization –O , Organization Unit –OU

Organization:
Typically, you create organizations directly under the Root Organization, for example, "o=ibm,o=root organization".

Organization unit:
Organization units represent lower level organizational entities under a top-level organization, for example, "ou=software division,o=ibm,o=root organization".
(LEVELS specified from right to left)

select * from member where member_id=7000000000000001554; -- A member of type OrgEntity (O)
select * from orgentity ; -- 7000000000000001554 will be here in this table

ROOT ORGANIZATION : 

Top level , automatically assigned all roles, Default MEMBER_ID= -2001

DEFAULT ORGANIZATION :
-Just below Root
-Registered user without a specific Org , Generic users, Guest Users goes here
-Default MEMBER_ID= -2000