Managing Model Security

You can manage the security privileges on your models by using the GRANT and REVOKE statements. The following examples show how you can change privileges on user1 and user2 using the faithful table and the linearReg model.

  • In the following example, the dbadmin grants the SELECT privilege to user1:
    • => GRANT SELECT ON TABLE faithful TO user1;
    GRANT PRIVILEGE
  • Then, the dbadmin grants the CREATE privilege on the public schema to user1:
    • => GRANT CREATE ON SCHEMA public TO user1;
GRANT PRIVILEGE
  • Connect to the database as user1: 
    • => \c - user1
  • As user1, build the linearReg model: 
=> SELECT LINEAR_REG('linearReg', 'faithful', 'waiting', 'eruptions');
LINEAR_REG
---------------------------
Finished in 1 iterations
(1 row)
  • As user1, grant USAGE privileges to user2:
=> GRANT USAGE ON MODEL linearReg TO user2;
GRANT PRIVILEGE
  • Connect to the database as user2:
=> \c - user2
  • To confirm privileges were granted to user2, run the GET_MODEL_SUMMARY function. A user with the USAGE privilege on a model can run GET_MODEL_SUMMARY on that model: 
=> SELECT GET_MODEL_SUMMARY(USING PARAMETERS model_name='linearReg');

=======
details
=======
predictor|coefficient|std_err |t_value |p_value
---------+-----------+--------+--------+--------
Intercept| 33.47440  | 1.15487|28.98533| 0.00000
eruptions| 10.72964  | 0.31475|34.08903| 0.00000

==============
regularization
==============
type| lambda
----+--------
none| 1.00000

===========
call_string
===========
linear_reg('public.linearReg', 'faithful', '"waiting"', 'eruptions'
USING PARAMETERS optimizer='newton', epsilon=1e-06, max_iterations=100, regularization='none', lambda=1)

===============
Additional Info
===============
Name              |Value
------------------+-----
iteration_count   |  1
rejected_row_count|  0
accepted_row_count| 272
(1 row)
  • Connect to the database as user1:
=> \c - user1
  • Then, you can use the REVOKE statement to revoke privileges from user2:
=> REVOKE USAGE ON MODEL linearReg FROM user2;
REVOKE PRIVILEGE
  • To confirm the privileges were revoked, connect as user 2 and run the GET_MODEL_SUMMARY function: 
=> \c - user2
=>SELECT GET_MODEL_SUMMARY('linearReg');
ERROR 7523:  Problem in get_model_summary.
Detail: Permission denied for model linearReg

See Also