Beginning Database Design Solutions (Wrox Programmer to by Rod Stephens

By Rod Stephens

Certainly the simplest database layout e-book i have stumble upon. a superb mixture of concept and practicality that would depart you well-prepared to take on near to any layout problem. the simplest half in regards to the ebook is that it isn't in particular tied to any database, it is extra in regards to the ideas and guidance that you're going to use in any implementation, yet with no the overbearing educational vibe. i used to be a bit fearful while I opened the e-book and observed that he used to be an MIT nerd, however the writer is sort of a personality and does a good activity speaking to these people on planet earth.

Well written, a whole bunch functional recommendation, lots of sophisticated humor, and extremely effortless to learn. There are a great deal of examples, workouts, and actual global assistance that maintain this (normally uninteresting) subject fascinating. Bravo.

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Extra resources for Beginning Database Design Solutions (Wrox Programmer to Programmer)

Sample text

Quite typically, retail is simplistic when it comes to computerization. Manufacturing can be extremely complex, especially when parts and pieces manufactured are custom-made as well as off-the-shelf. The more complexity a database model requires, the more questions you must ask. The more questions there are to ask, the larger the amount of detail and potential layering within the structure of a design solution. In conclusion, the more questions you have, the more people you might want to talk to, and, thus, the more people in different roles you will probably need to talk to as well.

For example, a simple invoicing system requiring only that bills be sent out excluding details of what is being sent out makes a simple book retailer require the same data modeling complexity as that of an auto parts manufacturer. Of course, if the evolving application is to include part numbers, colors, materials of which items are made, correct parts for different types of cars, how things are made, precise measurements, the list goes on — there is a complexity issue. How complicated can selling books get?

If a separate set of tables is created for every special-case scenario, you will have too many tables and, therefore, no reduction in complexity (probably what the company was aiming at by computerizing). An extremely complex database model is not the objective. Application developers and end-users need simplicity. Without adequate simplicity, your database model design might be impossible to use, particularly in the case of end-users and a data warehouse. The job of a database modeler is simplicity through abstraction.

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