A command used in Oracle to display how the query optimizer ...

[Destiiny22]

A command used in Oracle to display how the query optimizer intends to access indexes, use parallel servers and join tables to prepare query results is the:
 
  A) explain plan.
  B) show optimization.
  C) explain query.
  D) analyze query.

Question 2

All of the following are newer XML schema languages EXCEPT:
 
  A) Document Type Declarations (DTDs).
  B) XML Schema Definition (XSD).
  C) RELAX NG.
  D) Document Structure Description (DSD).

[janeli1]

Answer to Question 1

A

Answer to Question 2

A