Objectives: Introduction Over View of System Analysis and Design

Describe and Identify Characteristics of Candidate System

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Table-4-1 Safe Deposit Billing package and Selected Characteristics Characteristic s IBM PC HP 100 Apple III

4. Describe and Identify Characteristics of Candidate System
From the candidate systems considered, the team begins a preliminary evaluation in an attempt to reduce them to a manageable number. Technical knowledge and expertise in the hardware / software area are critical for determining what each candidate system can and cannot do. In the safe deposit example, a search for the available microcomputers and safe deposit billing packages revealed the information summarized in Table 4-1. These packages were the result of a preliminary evaluation of more than 15 other packages – all purporting to meet the requirements, of the safe deposit billing system. When the number is reduced to three key packages, the next step is to describe in some detail the characteristics of each package. For example, the first candidate system runs on an IBM PC with a minimum of 128K-bytes of memory. The software is written in Oracle, a relatively new language. In case of enhancements, change has to be made through the software house, since the source code is not available to the user.

Table-4-1 Safe Deposit Billing package and Selected Characteristics
Characteristic
s
IBM PC
HP 100
Apple III
Memory required (K bytes)
128 64 264 Source language Oracle VB VB Source Code Available No Yes No Purchase terms Purchase License) Purchase License) Purchase License) Purchase price Rs Rs Rs Number installed to date
200 30 50 Date of first installation
2002 2001 2000 The first package was installed in January 2002. More than 200 packages have been installed to date. The next two candidate systems are similarly described. The information along with additional data available through the vendor highlights the positive and negative features of each system. The constraints unique to each system are also specified. For example, in the IBM PC package, the lack of an available source code means that the user has to secure a maintenance contract that costs 18 percent of the price of the package per year. In contrast the HP 100 package is less expensive and offers a source code to the

user. A maintenance contract (optional) is available at 18 percent of the price of the package.

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