When redesigning a database, how can we check assumptions about ...

[kshipps]

When redesigning a database, how can we check assumptions about functional dependencies?
 
  What will be an ideal response?

Question 2

SQL query results are displayed:
 
  A) in a tabbed results window.
  B) in a tabbed Results1 window.
  C) in a tabbed Document window.
  D) in a tabbed Messages window.
  E) in a tabbed Finished window.

[billybob123]

Answer to Question 1

There are two related SQL techniques that we can use to check assumptions about functional dependencies in an existing database. The first is to use a correlated subquery with the SQL IN keyword, and the second is to use a correlated subquery structure using the SQL EXISTS and/or NOT EXISTS keywords.

Answer to Question 2

A