a) Transform the given ER-Diagram into a relational schema and, show relationships between the tables and identify the constraints existing between entities. b) Create tables from relations identified in previous step and draw relational schema diagram viewed from mysql interface.

a) Transform the given ER-Diagram into a relational schema and, show relationships between the tables and identify the constraints existing between entities. b) Create tables from relations identified in previous step and draw relational schema diagram viewed from mysql interface.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.

Question

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a) Transform the given ER-Diagram into a relational schema and, show relationships
between the tables and identify the constraints existing between entities.
b) Create tables from relations identified in previous step and draw relational schema diagram viewed
from mysql interface.
name
Region
Supplier
Supplies
balan
Deals
Managee
Stock
Contains
ID
D-name)
Director
Maintains
Product
name
Deals
Supervise
Employee
Handles>
Purchase
Price
(name)
Lotha
Customer
(name
Abless
Buys

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