Originally posted by julian
Originally posted by marist89
a. DBA-Tables and DBA-constraints
B. User_tables and User constraints
C. User objects & user tables
D. DBA-objects and DBA tables
could be either a or b
It is just B, not A for could this be one of those silly questions whose explanation is something like:

"A is not the correct answer, since there are no tables called DBA-Tables and DBA-constraints. The similar tables are DBA_Tables and DBA_constraints."
Using that same logic, B is incorrect because there is no object named "User constraints" either. I think something was lost in the copying of the question...