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Examine the code:   CREATE ROLE readonly IDENTIFIES USING app.chk_readwrite ; CREATE ROLE readwrite IDENTIFIED USING app.chk_readwrite ;   CREATE OR REPLACE PROCEDURE app.chk_readwrite  AUTHID CURRENT_USER IS  ipchk STRING(30);  BEGIN  IF sys_context(‘USERENV’,’ISDBA’)=’TRUE’  THEN DBMS_SESSION.SET_ROLE‘READWRITE’) ;  ELSE DBMS_SESSION.SET_ROLE(‘READONLY’) ;  END; /   Which three statements correctly describe the Secure Application role definition?()

发布日期:2020-04-10

Examine the code:   CREATE ROLE readonly IDENTIFIE...
A

No user or application has to remember or hide a password.

B

It prevents everyone except a true DBA session from acquiring the READWRITE role.

C

app.chk_readwrite is called whenever a user tries to access rows protected by the READONLY or READWRITE label.

D

app.chk_readwrite is called by users or applications when they want to enable the READONLY or READWRITE role.

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