How to implement authorisation on table columns

Can anyone suggest a smart way to use Weblogic platform capabilities to implement
a table column security/authorisation "control". ie. control on a column by column
basis who can view or update a column? Scenario - a primary data owner "owns"
a set of records in a database, but would like to give (or delegate) selected
access to groups of users to view and/or update the content of certain fields
in the recordset.
Seems like this is probably not that uncommon a requirement but can't seem to
find any design patterns for this.

Dean Tine wrote:
Can anyone suggest a smart way to use Weblogic platform capabilities to implement
a table column security/authorisation "control". ie. control on a column by column
basis who can view or update a column? Scenario - a primary data owner "owns"
a set of records in a database, but would like to give (or delegate) selected
access to groups of users to view and/or update the content of certain fields
in the recordset.
Seems like this is probably not that uncommon a requirement but can't seem to
find any design patterns for this.The first question is, if you are going through an application server
why do you need to do anything clever at all? You can check the role of
authenticated users and grant or deny access based on that (i.e. some
dynamically generated SQL dependent on role)?
If you really need support at the DBMS level, you can use SQL VIEWs.
Create a view containing the appropriate columns and grant permissions
to that view to the appropriate users. With an app server you will need
multiple connection pools though and it quickly gets messy.
Alternatively use stored procedures. Depending on your DBMS this might
be required (if views aren't updatable) or could give better
performance. Or worse performance.
Robert

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