Data Modeling Techniques for Data Warehousing phần 6 pot

... models will not do. Chapter 2. Data Warehousing 7 8 Data Modeling Techniques for Data Warehousing 22 Data Modeling Techniques for Data Warehousing Tables 1. Dimensions, Measures, and Related ... xii Data Modeling Techniques for Data Warehousing Chapter 9, “Selecting a Modeling Tool” on page 155, an overview of the functions that a data mo...

Ngày tải lên: 18/07/2014, 17:54

... ); inputStream.Close(); ■ 6. 3 Embedded Statements 113 for Statement The syntax of the for loop is: EBNF ForStmt = " ;for& quot; "(" ForInitializer? ";" ForCondition? ";" ForIterator? ... save {0:C}"; } 6 public static string Class() { return "You are buying for {0:C}"; } 7 public void Out(MessageFormat format, double d) { 8 System.Co...

Ngày tải lên: 05/08/2014, 10:20

... Bridge Seattle-SanFran LA-SanFran Portland-SanFran Phoenix-SanFran AllSitesBridge 5 1 5 5 16 60 minutes 30 minutes 60 minutes 60 minutes NA Available all hours Available all hours Available all hours Available ... Page 320 Sizing the Infrastructure for Windows 2000 ã Chapter 7 291 www.syngress.com Layer 1 and Layer 2 Layer 3 Layer 4 Layer 5 Layer 6 and Layer 7 Physical and...

Ngày tải lên: 07/08/2014, 17:20

... Data 123 AAAAA 234 BBBBB 345 CCCCC DATA STAGING Key Data 123 AAAAA 234 BBBBB 345 CCCCC DATA STAGING Key Data 123 AAAAA 234 BBBBB 345 CCCCC DATA STAGING Key Data 123 AAAAA 234 BBBBB 345 CCCCC DATA STAGING B EF O R AF TE R Key ... extracted data is raw data and it cannot be applied to the data warehouse. First, all the extracted data must be made usable in the data w...

Ngày tải lên: 08/08/2014, 18:22

... into the database us_presidents. 5. Type your MySQL root password—textbook—then press ENTER to execute the command string. 6. Type: mysql –u root –p us_presidents then press ENTER. ... records that match the criteria you set. In this case, you told MySQL to DELETE from the table name any records WHERE the value for id is greater than 2. 2. Type: SELECT * FROM...

Ngày tải lên: 08/08/2014, 22:20

... by 6 Data Modeling Techniques for Data Warehousing viii Data Modeling Techniques for Data Warehousing calling a totally new approach to data modeling. It is called dimensional data modeling, ... . . 15 0 8.4.4.5 Selecting a Data Warehouse Modeling Approach 15 1 Considerations for ER Modeling 15 2 Considerations for Dimensional Modeling 15 2...

Ngày tải lên: 14/08/2014, 06:22

... assigned to the modeling task rather than performing their standard business duties. Chapter 5. Architecting the Data 27 22 Data Modeling Techniques for Data Warehousing 4 .2. 3 A Combined Approach As ... maintain historical data while reconciling the data. Thus, we can say reconciled data is a special type of derived data. 24 Data Modeling Techniques for...

Ngày tải lên: 14/08/2014, 06:22

... key . Chapter 6. Data Modeling for a Data Warehouse 37 Chapter 6. Data Modeling for a Data Warehouse This chapter provides you with a basic understanding of data modeling, specifically for the purpose ... dimension table as a 46 Data Modeling Techniques for Data Warehousing 6 .3 ER Modeling A prerequisite for reading this book is a basic knowledge o...

Ngày tải lên: 14/08/2014, 06:22

... with the execution of the data warehousing processes. 50 Data Modeling Techniques for Data Warehousing Figure 24. Dimensions of CelDial Required for the Case Study 7 .4. 2.3 Creating Facts Together, ... Fact 2 and Fact 3 62 Data Modeling Techniques for Data Warehousing For a discussion on selection of a modeling technique, refer to Chapter 8, Data Wareho...

Ngày tải lên: 14/08/2014, 06:22

... simply adding more metadata. 72 Data Modeling Techniques for Data Warehousing 8.2 Principal Data Warehouse Modeling Techniques Listed below are the principal modeling techniques (beyond what ... to data warehouse modeling. 8.1 Data Warehouse Modeling and OLTP Database Modeling Before studying data warehouse modeling techniques, it is worthwhile investiga...

Ngày tải lên: 14/08/2014, 06:22

... or find a solution for their problems as well as on the type of data warehouse application that is being considered for the modeling project. 94 Data Modeling Techniques for Data Warehousing Figure ... clearly. The user should be informed, through the business metadata, which sets of determinant dimension keys are available for each fact. 108 Data Modeling Techniq...

Ngày tải lên: 14/08/2014, 06:22

... source data item. You may also have to deal with complex derivation formulas, involving several source data items, functional 112 Data Modeling Techniques for Data Warehousing Figure 72 . The ... page 115. 114 Data Modeling Techniques for Data Warehousing The Time Dimension: Because a data warehouse is an integrated collection of historical data, the abilit...

Ngày tải lên: 14/08/2014, 06:22

... attributes. Chapter 8. Data Warehouse Modeling Techniques 145 temporal modeling for producing the historical data model for the data warehouse. Successful data warehouse modeling requires that the techniques be ... such modeling techniques may turn out to be required for a particular project, complexity for end users can be reduced by building a front-end data...

Ngày tải lên: 14/08/2014, 06:22

... the complete database or incrementally generate parts of the database. 156 Data Modeling Techniques for Data Warehousing 9. 6 Reporting Reporting is an important function of the data modeling tool ... Figure 92 . Subset of CelDial Corporate ER Model 168 Data Modeling Techniques for Data Warehousing Information Engineering, and Zachman notation. An efficient a...

Ngày tải lên: 14/08/2014, 06:22

... 147 transform 161 triggers 160 two-tiered data modeling 91, 152 V volatility class 146 W WSDDM 25 Index 197 194 Data Modeling Techniques for Data Warehousing SG24-2238-00 Printed in the U.S.A. Data ... apply) (+45) 4 810- 1320 - Danish (+45) 4 810- 1420 - Dutch (+45) 4 810- 1540 - English (+45) 4 810- 1670 - Finnish (+45) 4 810- 1220 - French (+45) 4 810- 1020 - German (+...

Ngày tải lên: 14/08/2014, 06:22