rbac and row level permissions

Hi Experts,
I have been much reading on rbac. A typical rbac sql database schema is described to have...
Users -> Roles -> Permissions structure that act on objects (ie. tables) in a database. This I am fine with (I think)

My question is about permissions given to each row in a resource like tblNews table in order to protect it. So from a Users perspective...

Users Permission = I can edit each row in the tblNews table where the assigned editors of any row are USERTYPE_X

and from the tblNews perspective...

tblNews Permission = This rows editors are USERTYPE_X and USERTYPE_Y

i.e. the data in any one row of a resource is itself protected by a combination of PermissionType (CAN_EDIT_NEWS) and UserType (Club Secretary).

So, rather than a table get protected, it is each row that gets protected.

I hope this makes sense and if you know where I am trying to get to I will appreciate any thoughts and feedback.
MonCapitanAsked:
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RiteshShahConnect With a Mentor Commented:
there is no direct facility for row level permission. however, you can do it manually, like create few groups for permission, assign every user to one or more group, when you insert the row, create one mapping table that will have rowid and permitted group ID. when you execute SELECT, you have to query only those row number which are listed in mapping table for the group who is looking for row.
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