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http://issues.apache.org/jira/browse/DERBY-1330?page=comments#action_12413026 ] 

Satheesh Bandaram commented on DERBY-1330:
------------------------------------------

Interesting idea from Dan... about need to have SYSREQUIREDPERM system table. 
It does look possible, DEPENDENTID/PROVIDERID could be OPERATOR/OBJECT of new 
system table. Seems like a good fit with current dependency system.

About the comment about including GRATOR in new system table index, seems 
useful as well, when WITH GRANT OPTION is added in the future, so I will make 
this 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
>  Attachments: AuthorizationModelForDerbySQLStandardAuthorization.html
>
> 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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