prevent users from deleting any other data

I have a table

create table T)
infoID number primary key,
Info varchar2 (4000).
user varchar2 (1)
);

and users a, b, c with privileges of object on table T.

What is the best way to prevent users from deleting any other data?

1. create a view for each user to interacat with (where user = 'a') and to revoke the privileges of table T.
2. use the procedures or trigers to catch a bad user.
3.

you will have 1 table T shared between 3 users a, b and c and the need of the user a power manage only his own lines (manage is meaning insert/update/delete/select)

so the solution could be seen with trigger 'instead of', but Oracle has developed functionality especially for this DTV: [virtual private database | http://download.oracle.com/docs/cd/B28359_01/network.111/b28529/intro.htm#i1010494 |] VPD]

Tags: Database

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