Showing posts with label dbms. Show all posts
Showing posts with label dbms. Show all posts

Saturday, July 14, 2012

Good day students! I know you have a hard time constructing an ERD (Entity Relationship Diagram or Model) of your project.  Well, it is indeed a bit difficult to construct an ERD out from a scratch, but it can be easily done without wasting so many symbols and time.  You see our books are telling us the standard procedures on making ERDs but they haven't thought us some guidelines on how to start and that's where we make mistakes in the process.

So here are the requirements before I would start my tutorial:

1. Basic knowledge on ERD symbols and usage.
2. Knowledge on relationship cardinalities.
3. Basic knowledge on Normalization at least 1st or 2nd normal forms.
4. Business rules of the project.  -- this is important!