Systems Analysis & Design methods are required for developing information systems for businesses.  In order to understand the processes fully, invest in the following book:

Systems Analysis & Design for the Global Enterprise 7th Edition

L.D. Bentley / J.L. Whitten

Published by McGraw-Hill/Irwin

ISBN-13: 978-0-07-110766-2

ISBN-10: 0-07-110766-5

I refer to this edition often & recommend it to anyone interested in focusing on Systems Analysis & Design.  It gives an overall picture & breaks the process down into easy to read chapters, identifying what stage the method refers to in the life cycle.

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