ER diagram using a given entities
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Now its time to write specifications and design the database.
a. Requirement Analysis. Make a list of the data requirements. An example requirement would be:
1) for each book, the catalog contains its ISBN number, title, author, purchase price, sales price, and the year the book was published; 2) professors can manage and work on multiple projects.
b. Analysis and Conceptual Design. Analyze your project and come up with an ER diagram1 .
You must use one of the two approved notations mentioned at the beginning of this course (thus, NO crow’s feet notation or M..N notation). If you use any other notation other than one of the two approved notations in this course, then points will be deducted. Your ER diagram must be drawn using software — no handwritten models will be accepted. Make sure that you dont forget: 1. Cardinalities. 2. Constraints (if any) that apply over and above what you can show in the diagram.
State, using full-English sentences (in bullets), all of your assumptions for the entities and relations in your design for each relationship (reading it in both directions) that are covered in part (a) as well as any assumptions that are not shown in the ER diagram.
For example: We assume:
1. A person must work in at most one field, but each field may have many people.
2. A person can have one social security number. 3. A person may hold multiple jobs. et
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