[ 
http://issues.apache.org/jira/browse/DERBY-1330?page=comments#action_12420911 ] 

Mamta A. Satoor commented on DERBY-1330:
----------------------------------------

Just wondered if anyone got a chance to look at the patch 
Derby1330uuidIndexForPermsSystemTablesV6diff.txt. This one is a pretty 
localized change.

> Provide runtime privilege checking for grant/revoke functionality
> -----------------------------------------------------------------
>
>          Key: DERBY-1330
>          URL: http://issues.apache.org/jira/browse/DERBY-1330
>      Project: Derby
>         Type: Sub-task

>   Components: SQL
>     Versions: 10.2.0.0
>     Reporter: Mamta A. Satoor
>     Assignee: Mamta A. Satoor
>  Attachments: AuthorizationModelForDerbySQLStandardAuthorization.html, 
> AuthorizationModelForDerbySQLStandardAuthorizationV2.html, 
> Derby1330PrivilegeCollectionV2diff.txt, 
> Derby1330PrivilegeCollectionV2stat.txt, 
> Derby1330PrivilegeCollectionV3diff.txt, 
> Derby1330PrivilegeCollectionV3stat.txt, 
> Derby1330ViewPrivilegeCollectionV1diff.txt, 
> Derby1330ViewPrivilegeCollectionV1stat.txt, 
> Derby1330uuidIndexForPermsSystemTablesV4diff.txt, 
> Derby1330uuidIndexForPermsSystemTablesV4stat.txt, 
> Derby1330uuidIndexForPermsSystemTablesV5diff.txt, 
> Derby1330uuidIndexForPermsSystemTablesV5stat.txt, 
> Derby1330uuidIndexForPermsSystemTablesV6diff.txt, 
> Derby1330uuidIndexForPermsSystemTablesV6stat.txt
>
> Additional work needs to be done for grant/revoke to make sure that only 
> users with required privileges can access various database objects. In order 
> to do that, first we need to collect the privilege requirements for various 
> database objects and store them in SYS.SYSREQUIREDPERM. Once we have this 
> information then when a user tries to access an object, the required 
> SYS.SYSREQUIREDPERM privileges for the object will be checked against the 
> user privileges in SYS.SYSTABLEPERMS, SYS.SYSCOLPERMS and 
> SYS.SYSROUTINEPERMS. The database object access will succeed only if the user 
> has the necessary privileges.
> SYS.SYSTABLEPERMS, SYS.SYSCOLPERMS and SYS.SYSROUTINEPERMS are already 
> populated by Satheesh's work on DERBY-464. But SYS.SYSREQUIREDPERM doesn't 
> have any information in it at this point and hence no runtime privilege 
> checking is getting done at this point.

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