The SCOTT/TIGER user exists in two databases, BOSTON_DB and DALLAS_DB, in two different locations.
Each database has a tnsnames.ora file defining DALLAS_DB as a service name.
Examine this command:
CREATE DATABASE LINK dblink1 CONNECT TO scott IDENTIFIED BY tiger USING ‘dallas_db’;
How do you execute the command so that only SCOTT in BOSTON_DB can access the SCOTT schema in DALLAS_DB?
A . as SCOTT in DALLAS_DB
B . as SCOTT in BOSTON_DB
C . as SCOTT in BOSTON_DB and SYS in DALLAS_DB
D . as SYS in both the databases
E . as SCOTT in both the databases