Data Modeling Techniques for Data Warehousing phần 4 pdf
Data modeling techniques for data warehousing
... 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 thefunctions that a data modeling tool, or suite of tools, must support for ... the importance of data granularity, or level of detailof the data. Chapter 6, Data Modeling for a Data Warehouse” on page 35 presents thebasics of data modeling for the data warehouse. Two...
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Praise for C# 2.0: Practical Guide for Programmers 2005 phần 4 pdf
... copy ■ 4. 6 The Object Root Class 75 42 43 Console.WriteLine("sc1.ToString = {0}", sc1.ToString()); 44 Console.WriteLine("sc2.ToString = {0}", sc2.ToString()); 45 46 DeepCopy ... correct) but 64 Chapter 4: Unified Type System■ 4. 4 ConversionsIn developing C# applications, it may be necessary to convert or cast an expression ofone type into that of another. For example, ... }Output:HashCode o = 542 67293HashCode nc1 = 1511508983HashCode nc2 = - 545 749 58HashCode nc3 = 1511508983HashCode c1 = 18 643 596HashCode c2 = 335 746 38nc1 == null? no 78 Chapter 4: Unified Type System■more...
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Energy Options for the Future phần 4 pdf
... deuterium. The DIII-D, at GeneralAtomics, and the Alcator C-Mod, at MIT, arecurrently the largest tokamaks operating in the U.S.TFTR and DIII-D are shown in Figure 44 .Fig. 41 .Fig. 42 .10 1Energy Options ... Nuclear.In the U.S. in 2001 net primary energy con-sumption was 97 quadrillion BTU s (quads). Of thisFig. 37.9 7Energy Options for the Future Despite these system improvements, barriersremain to the ... (sus-tainability). The roles of this portfolio of options areillustrated in Figure 34. Each system has R&D challenges and none arecertain of success.g yy g yFig. 33.Fig. 34. 9 5Energy Options for the Future ...
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MySQL Basics for Visual Learners PHẦN 4 pdf
... GETTING STARTED WITH MYSQL 39 4. Type: \q; then press ENTER. This closes your MySQL database connection. You are now logged out of the MySQL server: the mysql& gt; prompt is ... GETTING STARTED WITH MYSQL 41 Giving MySQL commands to a Web server MySQL s client/server arrangement makes it well-suited to Web applications. With MySQL server running on a ... ADMINISTERING DATABASES 46 The window should look like this: GETTING STARTED WITH MYSQL 42 ADMINISTERING DATABASES 49 4. Type: cd / then press...
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Data Modeling Techniques for Data Warehousing phần 1 ppsx
... by6 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 08.4.4.5 Selecting a Data Warehouse Modeling Approach 15 1Considerations for ER Modeling 15 2Considerations for Dimensional Modeling 15 2Two-Tiered Data Modeling 15 2Dimensional Modeling ... 79Chapter 8. Data Warehouse Modeling Techniques 81 8 .1 Data Warehouse Modeling and OLTP Database Modeling 81 8 .1. 1 Origin of the Modeling Differences 828 .1. 2 Base Properties of a Data Warehouse...
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Data Modeling Techniques for Data Warehousing phần 2 docx
... assigned to the modeling task rather thanperforming their standard business duties.Chapter 5. Architecting the Data 27 22 Data Modeling Techniques for Data Warehousing 4 .2. 3 A Combined ApproachAs ... maintain historical data while reconciling the data. Thus, we can sayreconciled data is a special type of derived data. 24 Data Modeling Techniques for Data Warehousing 4 .2. 1 Top Down ImplementationA ... need for more global data access across theorganization, return-on-investment requirements, and speed of implementation.18 Data Modeling Techniques for Data Warehousing 14 Data Modeling Techniques...
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Data Modeling Techniques for Data Warehousing phần 3 potx
... key.Chapter 6. Data Modeling for a Data Warehouse 37 Chapter 6. Data Modeling for a Data WarehouseThis chapter provides you with a basic understanding of data modeling, specifically for the purpose ... dimension table as a46 Data Modeling Techniques for Data Warehousing 6 .3 ER Modeling A prerequisite for reading this book is a basic knowledge of ER modeling. Therefore we do not focus on ... storage space.28 Data Modeling Techniques for Data Warehousing multidimensional modeling, data granularity modeling, and the capabilities of aparticular DBMS to support data warehousing. 5.4.2...
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Data Modeling Techniques for Data Warehousing phần 4 pdf
... with the execution of the data warehousing processes.50 Data Modeling Techniques for Data Warehousing Figure 24. Dimensions of CelDial Required for the Case Study7 .4. 2.3 Creating FactsTogether, ... Fact 2 and Fact 362 Data Modeling Techniques for Data Warehousing For a discussion on selection of a modeling technique, refer to Chapter 8, Data Warehouse Modeling Techniques on page 81. ... developed data marts. Second, analyzing relationships in the source data can identifyareas on which to focus your data warehouse development efforts.52 Data Modeling Techniques for Data Warehousing...
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Data Modeling Techniques for Data Warehousing phần 5 ppsx
... simply adding moremetadata.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 worthwhileinvestigating the differences between data ... of monitoring efforts in thepost-implementation environment.76 Data Modeling Techniques for Data Warehousing Figure 34. The Complete Metadata Diagram for the Data Warehouse7 .5. 6 Validating...
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Data Modeling Techniques for Data Warehousing phần 6 pot
... orfind 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 areavailable for each fact.108 Data Modeling Techniques for Data Warehousing Figure 43. ... therefore not lastvery long. As a general guideline, we recommend performing business-relatedrequirements analysis and initial dimensional modeling. 104 Data Modeling Techniques for Data Warehousing...
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Data Modeling Techniques for Data Warehousing phần 7 ppsx
... source data item. You may also have to deal withcomplex derivation formulas, involving several source data items, functional112 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 ofhistorical data, the ability to analyze data from a time ... primecopy of the source data items required for the dimensional model.116 Data Modeling Techniques for Data Warehousing an initial model for the Inventory fact for our presumed extension of the primitiveCelDial...
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Data Modeling Techniques for Data Warehousing phần 8 pot
... 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 model for 150 Data Modeling Techniques for Data ... isavailable for the dimension. In general though, both situations boil down to usingstandard temporal modeling techniques. 1 38 Data Modeling Techniques for Data Warehousing particular object in the database....
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Data Modeling Techniques for Data Warehousing phần 9 pot
... the complete databaseor incrementally generate parts of the database.156 Data Modeling Techniques for Data Warehousing 9. 6 ReportingReporting is an important function of the data modeling tool ... Figure 92 . Subset of CelDial Corporate ER Model168 Data Modeling Techniques for Data Warehousing Information Engineering, and Zachman notation. An efficient and effective data modeling tool ... X160 Data Modeling Techniques for Data Warehousing Figure 94 . Dimensional Model for CelDial Product InventoryA.6 CelDial Metadata - Proposed SolutionNo model is complete without its metadata....
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Data Modeling Techniques for Data Warehousing phần 10 docx
... 147transform 161triggers 160two-tiered data modeling 91, 152Vvolatility class 146WWSDDM 25Index 197 194 Data Modeling Techniques for Data Warehousing SG24-2238-00Printed 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(+45) 4 810- 1620 - Italian(+45) 4 810- 1270 ... charge)190 Data Modeling Techniques for Data Warehousing Erickson, C. G., “Multidimensionalism and the Data Warehouse,” The Data Warehouse Conference, February 1995.Foley, J., and B. DePompa, “Data...
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