By Danny Greefhorst, Erik Proper
It may be argued that structure ideas shape the cornerstone of any structure. the point of interest of this ebook is at the position of structure rules. It offers either a balanced viewpoint on structure ideas, and is the 1st ebook at the topic.
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Additional info for Architecture Principles: The Cornerstones of Enterprise Architecture (The Enterprise Engineering Series)
System structure and IS/IT availability shall enable mergers, acquisition, and establishment on new sites” (Lindström 2006b). • “Customers: We only service customers who pay their bill” (Lee 2006). • “When determining information systems solutions, the preferred order of selection should be an existing system, a purchased application package, in-house development, then outside services” (Richardson et al. 1990). At the start of their life-cycle, normative principles are just statements that express the fundamental belief of how things ought to be.
In this notation, objects (entity types) are shown as boxes with rounded corners, relationships (fact types) are represented as two rectangles that show the roles that the objects play in both directions, and specialization relationships as lines that end with an arrow. Entity types that are attributed to other entity types are represented inside of a larger box with rounded corners, such shown in the case of proposition and normative principle. In the resulting framework depicted in Fig. 2, we have added several generalizations leading to a generalization hierarchy.
The PRISM framework is actually a fully principles-based architecture framework. In this context, principles were defined as “simple, direct statements of an organization’s basic beliefs about how the company wants to use IT in the long term” (Davenport et al. 1989). Note that in this definition, the operative word is wants. It refers to the fact that fundamentally, such principles are used to express a normative desire. Even more, it also expresses how these principles will aim to bridge the communication gap between top management and technical experts.
Architecture Principles: The Cornerstones of Enterprise Architecture (The Enterprise Engineering Series) by Danny Greefhorst, Erik Proper