DATABASE CONCEPTS CUSTOM
8th Edition
ISBN: 9780134639864
Author: KROENKE
Publisher: PEARSON C
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Chapter 5, Problem 5.20RQ
Explanation of Solution
Many-to-many relationship (N:M):
Many-to-many relationship is one of the types of binary relationship that refers to the relationship that is laid between the two entities which means that many records in a table are associated with many records in another table.
Example:
In a library
IE crow’s foot ER diagram:
Information Engineering is a method to represent the relationship between the entities. It uses crow’s foot to denote the many sides of a relationship. Hence, it is referred to as IE crow’s feet ER diagram.
- Relational database system will not allow the user to implement a direct many-to-many relationship. Therefore, the many-to-many relationship will break into two one-to-many relationships the using third table and it is called “intersection table”...
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Chapter 5 Solutions
DATABASE CONCEPTS CUSTOM
Ch. 5 - Explain how entities are transformed into tables.Ch. 5 - Prob. 5.2RQCh. 5 - Prob. 5.3RQCh. 5 - What is denormalization?Ch. 5 - Prob. 5.5RQCh. 5 - Explain the problems that denormalized tables may...Ch. 5 - Explain how the representation of weak entities...Ch. 5 - Explain how supertype and subtype entities are...Ch. 5 - Prob. 5.9RQCh. 5 - Prob. 5.10RQ
Ch. 5 - Show two different ways to represent the 1:1...Ch. 5 - Prob. 5.12RQCh. 5 - Prob. 5.13RQCh. 5 - Prob. 5.14RQCh. 5 - Prob. 5.15RQCh. 5 - Prob. 5.16RQCh. 5 - For your answer to question 5.15, code an SQL...Ch. 5 - Prob. 5.18RQCh. 5 - Prob. 5.20RQCh. 5 - Prob. 5.21RQCh. 5 - Explain how the terms parent table and child table...Ch. 5 - For your answers to questions 5.20, 5.21, and...Ch. 5 - Prob. 5.24RQCh. 5 - Prob. 5.25RQCh. 5 - Prob. 5.26RQCh. 5 - Prob. 5.27RQCh. 5 - Prob. 5.28RQCh. 5 - Define the three types of recursive binary...Ch. 5 - Prob. 5.30RQCh. 5 - Prob. 5.31RQCh. 5 - Prob. 5.32RQCh. 5 - Prob. 5.33RQCh. 5 - Prob. 5.34RQCh. 5 - Code an SQL statement that creates a table with...
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- Capsim Team PowerPoint Presentations - Slide Title: Key LearningsWhat were the key learnings that you discovered as a team through your Capsim simulation?arrow_forwardWrite the SQL code that permits to implement the tables: Student and Transcript. NB: Add the constraints on the attributes – keys and other.arrow_forwardDraw an ERD that will involve the entity types: Professor, Student, Department and Course. Be sure to add relationship types, key attributes, attributes and multiplicity on the ERD.arrow_forward
- Draw an ERD that represents a book in a library system. Be sure to add relationship types, key attributes, attributes and multiplicity on the ERD.arrow_forward2:21 m Ο 21% AlmaNet WE ARE HIRING Experienced Freshers Salesforce Platform Developer APPLY NOW SEND YOUR CV: Email: hr.almanet@gmail.com Contact: +91 6264643660 Visit: www.almanet.in Locations: India, USA, UK, Vietnam (Remote & Hybrid Options Available)arrow_forwardProvide a detailed explanation of the architecture on the diagramarrow_forward
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