i am assigned to make a paper work of a data base in which i have to create

1. case
2. entities and their relationships
3. ER diagram

if any one have this data relating to any company or a website.
plz send it to me. i will do it by my self but i have no idea what a data base is.
i have to submit this on Tuesday

seems like you have some catching up to do, eh

please post again when you have something that we can review for you

Hai hajvery,

Seems like u want

1 - A business case where the business needs a RDBMS and you have to come up with the UoD (Universe of Discouse) and Information Requirements

2 - The Conceptual Model in ERD

3 - And you may or may not need the Logical Model.

I suggest that you get some Logical models and build your case around it. See these models.

http://www.databaseanswers.org/data_models/index.htm

Just pick any model and build your case around it. In actual pratice it is done the other way around.

If you want an ERD try this



http://en.wikipedia.org/wiki/File:ER_Diagram_MMORPG.png

Sounds to me like you're in the wrong class, my friend.