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 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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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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