Data warehousing for dummies by Thomas C. Hammergren

By Thomas C. Hammergren

Facts warehousing is likely one of the most popular company subject matters, and there’s extra to realizing info warehousing applied sciences than you may imagine. discover the fundamentals of knowledge warehousing and the way it allows facts mining and company intelligence with Data Warehousing For Dummies, 2d Edition.

Data is perhaps your company’s most vital asset, so your info warehouse may still serve your wishes. The totally up-to-date moment variation of Data Warehousing For Dummies is helping , strengthen, enforce, and use facts warehouses, and provides a sneak peek into their destiny. You’ll research to:

  • Analyze top-down and bottom-up info warehouse designs
  • Understand the constitution and applied sciences of information warehouses, operational facts shops, and knowledge marts
  • Choose your venture staff and practice top improvement practices for your info warehousing projects
  • Implement an information warehouse, step-by-step, and contain end-users within the process
  • Review and improve latest information garage to make it serve your needs
  • Comprehend OLAP, column-wise databases, assisted databases, and middleware
  • Use information mining intelligently and locate what you need
  • Make proficient offerings approximately specialists and information warehousing products

Data Warehousing For Dummies, 2d Edition additionally exhibits you ways to contain clients within the trying out approach and achieve useful suggestions, what it takes to effectively deal with a knowledge warehouse undertaking, and the way to inform in case your undertaking is on course. You’ll locate it’s the main precious resource of knowledge at the topic!

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Extra resources for Data warehousing for dummies

Sample text

Then, Mary returns to her desk, report in hand, and picks up the telephone. First, she calls her problem-child store and, after the manager comes to the phone, spends the next half hour making follow-on information requests from the data warehouse, discussing the result of each request with the store manager, and considering various options, such as sales promotions. After Mary takes her regular two-mile lunchtime walk, she calls the manager of another store in Madison County, Iowa, whose second-quarter sales were relatively flat after experiencing at least 15-percent growth every quarter for the past three years (a fact she obtained from the data warehouse when she noted the lack of growth in the second quarter).

These components include 38 Part I: The Data Warehouse: Home for Your Data Assets ✓ The breadth; the number of different subjects and focus points, for example, or the number of different functional or regional organizations that will use it ✓ The number of sources that will provide raw data ✓ The means by which data is moved from source applications and loaded into the data warehouse ✓ The business rules applied to the raw source data to produce high quality data assets ✓ The target databases in which data assets are stored ✓ The data assets; the elements, the level of detail in each element, and how much history is being maintained, for example ✓ The business intelligence, front-end tool used to access the data assets ✓ The overall architectural complexity of the environment No two data warehouse implementations (neither the implementations now in existence nor all those to be completed in the future) will be identical in all the preceding eight categories.

People typically gave up because answering their questions just took too much time. 15 16 Part I: The Data Warehouse: Home for Your Data Assets Additionally, commercial and hardware/software companies began to emerge with solutions to this problem. Between 1976 and 1979, the concept for a new company, Teradata, grew out of research at the California Institute of Technology (Caltech), driven from discussions with Citibank’s advanced technology group. Founders worked to design a database management system for parallel processing with multiple microprocessors, specifically for decision support.

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