Discussion
If a denormalization situation exists with a many-to-many or associative binary relationship, which of the following is true?
Answer: B
Correct answer: All fields are stored in two relations.
A many-to-many relationship denormalises into the associative relation and one of the participants, giving two relations rather than three. It cannot be collapsed into one, because doing so would repeat every attribute of one participant for each of its associations - which is the redundancy normalisation exists to prevent.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development