12. Layered Architecture for Information Systems
The analysis patterns in this book will be of great value to developers of corporate information systems. Information system (IS) development involves more than an understanding of a domain, however. A world of many users, databases, and legacy systems must be accommodated. This chapter discusses architectural patterns for information systems. An architectural pattern describes the high-level division of a system into major subsystems and the dependencies among the subsystems. An information system architectural pattern divides the system into layers (or tiers). Architectural patterns are useful on their own, but they also show how the analysis patterns fit into a wider context. Chapter 13 describes ...
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