Research and investigate the following scenarios. Include an analysis by providing arguments or counter arguments and examples where necessary: a) How do older file systems and the database approach differ in terms of the relationship between the data and the application programs? b) What is meant by the term ‘weak entity’? Why is it not possible to represent a many-to-many relationship with two tables? c) Explain what is mean by transactions in the context of a database and why they are needed. Describe the facilities that a DBMS should provide for the support of transactions.
Research and investigate the following scenarios. Include an analysis by providing arguments or counter arguments and examples where necessary: a) How do older file systems and the database approach differ in terms of the relationship between the data and the application programs? b) What is meant by the term ‘weak entity’? Why is it not possible to represent a many-to-many relationship with two tables? c) Explain what is mean by transactions in the context of a database and why they are needed. Describe the facilities that a DBMS should provide for the support of transactions.
Database Systems: Design, Implementation, & Management
12th Edition
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Carlos Coronel, Steven Morris
Chapter9: Database Design
Section: Chapter Questions
Problem 7P
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Question
Research and investigate the following scenarios. Include an analysis by providing
arguments or counter arguments and examples where necessary:
a) How do older file systems and the
relationship between the data and the application
b) What is meant by the term ‘weak entity’? Why is it not possible to represent a many-to-many relationship with two tables?
c) Explain what is mean by transactions in the context of a database and why they are
needed. Describe the facilities that a DBMS should provide for the support of
transactions.
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