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

By Steve Hoberman

A goldmine of helpful instruments for information modelers!Data modelers render uncooked data-names, addresses, and revenues totals, for instance-into details equivalent to patron profiles and seasonal procuring styles that may be used for making severe company judgements. This booklet brings jointly thirty of the simplest instruments for fixing universal modeling difficulties. the writer presents an instance of every software and describes what it really is, why it's wanted, and the way it truly is often used to version info for either databases and knowledge warehouses, in addition to assistance and warnings. clean pattern copies of all worksheets and checklists defined are supplied in an appendix.Companion site beneficial properties updates at the most modern instruments and strategies, plus hyperlinks to similar websites delivering computerized instruments.

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I took the family to that new amusement park. The rides are amazing, especially the roller coaster. A drop of over 100 feet! Have you ever been there? Your mind: Hmmm. A roller coaster. The blueprint for a roller coaster is similar to the data model for a database. This might make a good analogy. You: I haven’t been there yet, but I do love to ride roller coasters. Maybe I’ll pay the amusement park a visit as a reward for completing the data models for your project. Say, Mary, I’ve had a chance to review the updated project plan this weekend and frankly was a little surprised by how little time was allocated to the data modeling phase of this project.

I know you’re very busy. That world map on your wall is just like this enterprise data model project that we are eager to start working on. Bob: You are wasting my time. Twelve minutes left! You: You see, both that map on your wall and our enterprise data model provide three very important benefits: agreement, planning, and issue resolution. ) Agreement means that people with very different backgrounds, cultures, and beliefs understand and concur that this is the way the world is. On the enterprise data model, your data warehouse department and the accounting department can finally agree on which financial data are in the data warehouse.

In much the same way as a world map is used to show the countries, nations, bodies of water, and their relationships, the enterprise data model is used to show all of the concepts or subject areas of a corporation and their relationships. A world map is a graphical representation of the entire globe. It helps us understand how we fit into the rest of our environment. It needs to be complete, consistent, and accurate. By complete we mean that the world map needs to contain all of the land and water and country boundaries that exist.

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