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| | You learned in A Vision for the Agile Data Method that agile methodologies such as eXtreme Programming (XP) (Beck 2000) and DSDM (Stapleton 2003) take an iterative and incremental approach to software development. Application developers on XP and DSDM projects typically forsake big design up front (BDUF) approaches in favor of emergent approaches where the design of a system evolves throughout the life of the project. On an agile development project the final design often isn't known until the application is ready to be released. This is a very different way to work for many experienced IT professionals to work. The implication is that the traditional approach of creating a (nearly) complete set of logical and physical data models up front isn't going to work. The main advantage of the traditional approach is that it makes the job of the process database administrator (DBA) much easier ?€“ the data schema is put into place early and that's what people use. However there are several disadvantages. First, it requires the designers to get it right early, forcing you to identify most requirements even earlier in the project, and therefore forcing your project team into taking a serial approach to development. Second, it doesn't support change easily. As your project progresses your project stakeholders understanding of what they need will evolve, motivating them to evolve their requirements. The business environment will also change during your project, once again motivating your stakeholders to evolve their requirements. In short the traditional way of working simply doesn't work well in an agile environment. If Agile DBAs are going to work on and support project teams that are following agile methodologies they need to find techniques that support working iteratively and incrementally. My experience is that one critical technique is database refactoring. Table of Contents 1. |
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| | Stop Eating Processed Sugar: First, let us give sugar its due. When we eat any sort of carbohydrate, from pasta to bananas to spinach, our bodies break it down into glucose, a form of sugar. Glucose is the basic energy supply that keeps us running. So, we need sugar to live. But notice that it comes from any carbohydrate. We can get all the sugar we need to function just by eating a healthy, balanced diet. |
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| | For those who are looking for an excellent way to generate outside income, the commercial real estate industry is a great way to go. |
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| | In these days, a growing number of people, especially the women, pay more and more attention to their appearance. Every year, they will spend a large sum of money on beauty products. Nowadays, the characterization of a person as "beautiful" is more based on outer beauty, which includes physical factors |
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| | Unfortunately, society today provides more and more temptations to damage the health of one's teeth. Smoking and drinking could have adverse negative affects to that wonderful smile. And even our kids are more exposed to sweets and other sticky stuff that can cause dental problems! Good thing though that technology has brought on many simple solutions to these dental problems |
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