ERD and Keys A contractor’s main entities are its customers, employees, projects, and equipment. A customer can hire the company for more than one project, and employees sometimes work on more than one project at a time. Equipment, however, is assigned to only one project at a time. Draw an ERD with the relationships and resolve any many to many relationships. Create an ID for each entity you create as the Primary Key. Identify any foreign keys in each entity where appropriate.

ERD and Keys A contractor’s main entities are its customers, employees, projects, and equipment. A customer can hire the company for more than one project, and employees sometimes work on more than one project at a time. Equipment, however, is assigned to only one project at a time. Draw an ERD with the relationships and resolve any many to many relationships. Create an ID for each entity you create as the Primary Key. Identify any foreign keys in each entity where appropriate.

Oracle 12c: SQL

3rd Edition

ISBN:9781305251038

Author:Joan Casteel

Publisher:Joan Casteel

Chapter1: Overview Of Database Concepts

Section: Chapter Questions

Problem 7MC

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Question 7 On ERD, you can create attributes with the same name in different Entities. Question 7 options: True False
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In order to utilize an index, an attribute's values must be sufficiently varied.
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