Mapping E-R To Relational Model (ROLL NO:35, S5 CS2) : September 22, 2013
Mapping E-R To Relational Model (ROLL NO:35, S5 CS2) : September 22, 2013
Mapping E-R To Relational Model (ROLL NO:35, S5 CS2) : September 22, 2013
Books are published by publisher and are borrowed by members of the library .
Books are managed by staffs of the library and are categorized on separate sections .
Also each member has his /her own unique member-id (M-id).
Staffs are identified by their staff-id and also each section has unique section code.
Each publisher has name and address .All staffs has name ,post and salary .
Each section of the library has number and name. Each member has address, name, membership type and
date of membership.
Books are borrowed on the basis of return date, due date and date of issue.
E-R DIAGRAM
Entities:
Publisher
Pub_id Name Address
Member
Books
Section
Staff
Relationships
Published by:
Book_id Pub_id
Borrow by:
Managed by:
S_id Book_id
Categorized by:
S_code Book_id