Download Data Model Patterns: A Metadata Map by David C. Hay PDF

By David C. Hay

In recent times, businesses and executive firms have come to achieve that the knowledge they use signify an important company source, whose price demands administration each piece as rigorous because the administration of human assets, funds, and capital gear. With this cognizance has come reputation of the significance to combine the information that has characteristically in basic terms been to be had from disparate assets. an incredible component to this integration is the administration of the "metadata" that describe, catalogue, and supply entry to many of the varieties of underlying company information. The "metadata repository" is vital maintaining tune either one of a few of the actual parts of those platforms, but in addition their semantics. What can we suggest by means of "customer?" the place do we locate information regarding our consumers? After years of creating company versions for the oil, pharmaceutical, banking, and different industries, Dave Hay has the following not just constructed a conceptual version of this sort of metadata repository, he has in truth created a real company information version of the data know-how itself. * A finished paintings according to the Zachman Framework for info architecture-encompassing the company Owner's, Architect's, and Designer's perspectives, for all columns (data, actions, destinations, humans, timing, and motivation) * offers a step by step description of version and is prepared in order that various readers can make the most of diverse elements * offers a view of the realm being addressed by way of all of the suggestions, tools and instruments of the data processing (for instance, object-oriented layout, CASE, enterprise approach re-engineering, etc.) * offers many thoughts that aren't at the moment being addressed through such instruments - and may be

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Extra resources for Data Model Patterns: A Metadata Map

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40 DATA They may, however, also be the industry-specific (or company-specific) words that describe technical aspects of processes or other aspects of the enterprise (such as a bank’s use of the word “instrument”, which describes a completely different concept from an orchestra’s use of the word “instrument”). Note that there is an anomaly in this model: in the model, we cannot discuss instances of business concept without using words to do so. Hence, “Name” shows up as a perfectly reasonable attribute.

This may be something we data modelers characterize as an entity class (such as “Product”), an attribute of such a class (such as “color”), or an instance of a class (such as “IBM ThinkPad Model T24”). More significantly, however, it may also be something of importance to the business that is not necessarily included in our data model (such as “ICD 10”, the medical world’s catalogue of diseases, or completion—an oil industry term for the part of a well with holes in it, through which oil passes from the ground to the well).

By definition, all members of a speech community are speakers of the same language and part of the same semantic community. In Figure 2–4, each business term is shown to be in the language of exactly one speech community. Even if a word or phrase (such as “fortran”) exists in multiple languages (and therefore in multiple speech communities), its use in each of these constitutes a separate business term. Similarly, each business term is also shown in Figure 2–5 to be in exactly one symbol context, where a symbol context provides a scope for the business term.

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