Curioustab

Home » Database » Database Redesign

Before any changes to database structure are attempted one should first:

clearly understand the current structure and contents of the database only.
test any changes on a test database only.
create a complete backup of the operational database only.
All of the above should be done.

Correct Answer: All of the above should be done.

← Previous Question Next Question→

More Questions from Database Redesign

How many copies of the database schema are typically used in the redesign process?
Changing cardinalities in a database is:
Which is not true of a correlated subquery?
The process of reading a database schema and producing a data model from that schema is known as:
Because of the importance of making data model changes correctly, many professionals are ________ about using an automated process for database redesign.
Which of the following modifications may not succeed?
What SQL command will allow you to change the table STUDENT to add the constraint named GradeCheck that states that the values of the Grade column must be greater than 0?
Database redesign is not terribly difficult if the:
The data model produced from the reverse engineering process does not include intersection table data.
The NOT EXISTS keyword will be true if any row in the subquery meets the condition.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion