Database Concepts (8th Edition)
8th Edition
ISBN: 9780134601533
Author: David M. Kroenke, David J. Auer, Scott L. Vandenberg, Robert C. Yoder
Publisher: PEARSON
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Chapter 4, Problem 4.17RQ
Explanation of Solution
IE Crow’s Foot E-R diagram:
IE is information engineering and it uses crow’s feet to denote many side of relationship. Hence it is referred as IE Crow’s feet ER diagram.
IE Crow’s Foot E-R diagram for the entities DEPARTMENT and EMPLOYEE:
Explanation:
- The “Department” entity contains an attributes of “Dep_Name”, “Dep_ID”, and “Dep_Location”...
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Students have asked these similar questions
Draw an ER-Diagram for this situation and place minimum and maximum cardinalities on the diagram?
Entity type:
• EMPLOYEE with attribute: EmpID , Name (Firstname :besan, Lname) , Address :Amman, Birth_of_Date25/5/02 .
• DEPARTMENT with attribute : DeptID , DeptName , Loc
Relationship:
Works_in Relationship between EMPLOYEE and DEPARTMENT and each employee is works in zero or many department and each department worked by one or many employee.
draw an E-R diagram that indicates the entity sets and their attributes. Identify and label significant relationship sets between pairs of entities, the degree of relationship sets and the cardinality and participation constraints.
Draw an Entity relationship diagram (ER) for a university according to the
following rules:
+-- For each student the university needs to keep track of: first name, last
name, student id, address, phone no and their major.
- The student id is identical for each student.
-- Each course has a number, name and credit. The course number is unique
for each course.
+ -- Each department has a name, code and location. The code is unique for
each department.
- Each course may has one or more sections where each section is belong to
only one course.
-- A department offers one or many courses.
7- Some courses have perquisite courses.
8- Each student could register in one or more courses.
In your diagram you need to show the following:
1- The primary key for each entity.
2- The cardinality and participation between entities.
Chapter 4 Solutions
Database Concepts (8th Edition)
Ch. 4 - Prob. 4.1RQCh. 4 - Prob. 4.2RQCh. 4 - Prob. 4.3RQCh. 4 - What is a use case, and what is its purpose?Ch. 4 - Give an example of a data constraint.Ch. 4 - Prob. 4.6RQCh. 4 - Define the term entity, and give an example other...Ch. 4 - Explain the difference between an entity class and...Ch. 4 - Define the term attribute, and give examples for...Ch. 4 - Define the term identifier, and indicate which...
Ch. 4 - Prob. 4.11RQCh. 4 - Prob. 4.12RQCh. 4 - Prob. 4.13RQCh. 4 - Prob. 4.14RQCh. 4 - List and give an example of the three types of...Ch. 4 - Prob. 4.16RQCh. 4 - Prob. 4.17RQCh. 4 - Prob. 4.18RQCh. 4 - Define the term weak entity, and give an example...Ch. 4 - Explain the ambiguity in the definition of the...Ch. 4 - Define the term associative entity, and give an...Ch. 4 - Define the terms supertype, subtype, and...Ch. 4 - What is an exclusive subtype relationship? Give an...Ch. 4 - What is an inclusive subtype relationship? Give an...Ch. 4 - Prob. 4.25RQCh. 4 - Prob. 4.26RQCh. 4 - Prob. 4.27RQCh. 4 - Prob. 4.28RQ
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