Mastering Data Warehouse DesignRelational and Dimensional Techniques phần 1 pptx

... Calendar 16 4 The Factory Calendar 16 4 Calendar Elements 16 5 Day of the Week 16 5 Holidays 16 6 Holiday Season 16 7 Seasons 16 8 Calendar Time Span 16 9 Time and the Data Warehouse 16 9 The Nature of Time 16 9 Standardizing ... from a Recognized Standard 14 9 Surrogate Key 14 9 Dimensional Data Mart Implications 15 1 Differences in a Dimensional Model 15 2 Maintain...

Ngày tải lên: 08/08/2014, 22:20

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Ngày tải lên: 08/08/2014, 22:20

... apply the business data model include operational systems, data warehouse, and data mart databases, and the model provides the meta data (or information about the data) for these databases to help ... case of a data warehouse, these inter- faces include the data acquisition and the data delivery programs, where and when to perform data cleansing, audits, data main...

Ngày tải lên: 08/08/2014, 22:20

... Table (Data to be loaded into the DW) Data Warehouse SOURCE SYSTEM ENVIRONMENT Cleansing, Selection, Change Data Capture Archive Data Load data into data warehouse Archived (Complete) Source Data Extraction (Extract ... to meet the data warehouse needs. The business scenario used to develop the data warehouse data model is the Zenith Automobile Company that we intr...

Ngày tải lên: 08/08/2014, 22:20

... S 12 34567 29 30 31 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 JANUARY 2003 S MTWT F S 12 34 567 29 30 31 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Chapter 4 12 0 violate ... of the data warehouse and the data marts. Data acquisition performance. The level of granularity may (or may not) significantly impact the data...

Ngày tải lên: 08/08/2014, 22:20

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Ngày tải lên: 08/08/2014, 22:20

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Ngày tải lên: 08/08/2014, 22:20

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Ngày tải lên: 08/08/2014, 22:20

... Line Staging Data Store Data Warehouse Data Mart Data Mart Data Mart • Users Access Transactions Data Warehouse Bus Aggregated Data Mart Personal Data Mart Aggregated Data Mart Atomic Data Mart Atomic Data ... The data acquisition programs are designed, coded, tested, and executed. You then begin loading the data warehouse. 3. Map the data mart data model...

Ngày tải lên: 08/08/2014, 22:20

... 10 1 segregating data, 13 2 selecting data of interest, 99 11 1 selection process, 10 7 11 1 source data, 10 7, 10 9, 11 1 summarizing data, 12 4 12 9 system or physical models, 99 time to entity key, 11 1 11 9 transactional ... business data model, 3 71 business data model, 99, 10 1 data elements, 10 8, 11 1 definitions in source systems, 14 0 derived data, 11 9 12...

Ngày tải lên: 08/08/2014, 22:20