Chapter 6. Information Requirement Patterns

In this chapter:

6.1 Data Type Requirement Pattern 86

6.2 Data Structure Requirement Pattern 94

6.3 ID Requirement Pattern 97

6.4 Calculation Formula Requirement Pattern 102

6.5 Data Longevity Requirement Pattern 107

6.6 Data Archiving Requirement Pattern 110

Information is the lifeblood of commercial systems: IT is Information Technology, after all. It used to be called Data Processing (DP), but information has more prestige than mere data; this book treats the two as synonymous. Both names reflect the central nature of the information—entering, storing, displaying, reporting, and so on—in the vast majority of systems, especially those that play a part in running a business. So requirements that specify data ...

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