In database discussions, for creating many to many relationship class we must create a third table to relate two other tables.
However, in ArcGIS for creating many to many relationship class we just introduce two tables.
How does ArcGIS create a many to many relationship class without a third table?
forexample we have this issue
"A user can belong to multiple community, and a community can have multiple users"
forexample in "table to relationship class" tool we have three tables
and because ArcGIS does not know which origin objects are associated with which destination objects, so you must manually populate the rows
so we must have third table to link two others
this is the link that describe it