Designing E-ER Models for Data Requirements - IT Assignment Help

Assignment Task

Designing E-ER Models for data requirements.
The requirements for the Academic library are outlined below:
Item information

•  The library contains a list of Items
•  Every Item has an item_no, title, and a description
•  Every Item is identified by the item number
•  Items are classified into the following categories: Books, Periodicals, and Software & Manuals
•  Every Book has one or many Authors
•  Every Author has an author_id, last name, first name, and other names. An Author could have written one or many books.
•  Every Periodical has a publisher and a frequency (e.g., daily, weekly, monthly, quarterly and yearly)
•  Every Software & Manuals has a manufacturer and a version
•  Books are further classified as Text Books and Published Books
•  Periodicals are classified into Magazines and Newspapers
•  Every Text Book has a semester, year and section (such as lecture, lab or tutorial)
•  Every Published Book has an edition
•  Published Book has a Published Book Type depending on publisher of the book (for example, same book can be published by different publishers – such as US print by McGrawHill and Indian print of the book by TATA McGrawHill)
•  Published Book Type is identified by ISBN number. Also, Published Book Type contains Publisher, Cover (softback or hardback) and Year Published.
•  Periodicals also has a Periodical Type which contains the date the issue was published (for example, November issue of Sports Illustrated).
•  The items, (i.e. Text Book, Published Book Type, Periodical Type and Software & Manuals), can have multiple copies.
•  Each Copy of Item is identified by the access_no.
•  Copy of Item contains a status field which indicates whether the book is borrowed, lost, stolen or available.

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