Data Modeler's Workbench: Tools and Techniques for Analysis by Steve Hoberman

By Steve Hoberman

This guide introduces 20 instruments for bettering the rate, accuracy, flexibility, and consistency of databases, info warehouses, and operational functions. each one instrument is defined utilizing specified examples, its functions are defined, and its optimum operational and reporting atmosphere pointed out. specific realization is given to the system's starting place, the method of picking out its requisites, and the modeling of its specifications. Hoberman is a knowledge warehouse developer.

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The method used to note this fact on the blueprint is not up for interpretation. The height is nine feet. It is not eight or ten feet high, or even nine feet, one inch high. A data model provides the same level of rigor. A Customer must have at least one Account. This also is not up for interpretation. If a person does not have an Account, then the person is not a Customer. There is no room for multiple interpretations, as opposed to conversational language where there can be numerous interpretations.

It is a very good technique for introducing something foreign or new. By comparing something foreign to something familiar, the foreign concept is no longer as foreign and an initial level of understanding has been created. A good example of an analogy within the development arena is the waterfall approach to software development. This technique of developing applications is based on the outputs of a high-level phase flowing into the inputs of a more detailed phase. For example, the business requirements phase flows into the functional requirements phase, which flows into the technical requirements phase, and so on, just like a waterfall.

There are books of standards that each town uses to shape its environment. These standards help ensure one building does not stick out or look exceptionally odd compared with the rest of the town storefronts or residences. Some towns are much stricter than other towns. Cape May, New Jersey, for example, which prides itself on being a Victorian town, has such strict ordinances that owners of Victorian homes cannot even replace their outside doorknobs without first seeking approval from the township.

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