Database Re-Engineering and Redesign
Not what you're looking for?
1. Explain why database re-engineering and redesign is necessary.
2. What is the difference between a correlated subquery and a regular subquery?
3. Explain what is done when a NOT NULL column is added to a table.
4. What is a dependency graph?
5. Explain what should be done when adding tables and relationships for normalization.
Purchase this Solution
Solution Summary
Database re-engineering and redesign issues are embedded in the solution.
Solution Preview
1. Explain why database re-engineer and redesign is necessary.
Most database design work involves redesigning existing databases. Re engineering is necessary both to fix mistakes made during the initial database design and also to adapt the database to changes in system requirements. Such changes are common because information systems and organizations do not just influence each other they create each other. Thus, new information systems cause changes in systems requirements.
2. ...
Purchase this Solution
Free BrainMass Quizzes
Basic Computer Terms
We use many basic terms like bit, pixel in our usual conversations about computers. Are we aware of what these mean? This little quiz is an attempt towards discovering that.
Basic Networking Questions
This quiz consists of some basic networking questions.
Word 2010: Table of Contents
Ever wondered where a Table of Contents in a Word document comes from? Maybe you need a refresher on the topic? This quiz will remind you of the keywords and options used when working with a T.O.C. in Word 2010.
Inserting and deleting in a linked list
This quiz tests your understanding of how to insert and delete elements in a linked list. Understanding of the use of linked lists, and the related performance aspects, is an important fundamental skill of computer science data structures.
Java loops
This quiz checks your knowledge of for and while loops in Java. For and while loops are essential building blocks for all Java programs. Having a solid understanding of these constructs is critical for success in programming Java.