Accounting Information Systems: The Processes and Controls, 2nd Edition

ELEMENTS OF THE SYSTEMS DESIGN PHASE OF THE SDLC (STUDY OBJECTIVE 5)

The nature of the steps within the design phase of the SDLC is different, depending on whether the organization intends to purchase software or design the software in-house. Much of the software used by organizations today is purchased. However, even when software is purchased, it is likely to be modified or customized to suit the specific needs of the organization. Therefore, there are similarities in the steps of the system design phase when software is purchased and when it is designed and written in-house. Exhibit 6-5 shows the typical steps undertaken when software is purchased.

THE PURCHASE OF SOFTWARE

When the project team has reached the design phase, user needs and system requirements have previously been determined in the systems analysis phase. Therefore, the project team is ready to solicit proposals from different software vendors for accounting systems that satisfy the identified user needs and meet the system requirements.

Exhibit 6-5 System Design Process Map for Purchased Software

Often, an organization hires a consultant to assist in the selection, design, and implementation of purchased software. If the organization intends to hire a consulting firm, such hiring may take place at this point. However, it is important to understand that a consultant could be hired for any part or parts of the SDLC. ...