Data Warehousing Fundamentals: A Comprehensive Guide for IT ProfessionalsGeared to IT professionals eager to get into the all-important field of data warehousing, this book explores all topics needed by those who design and implement data warehouses. Readers will learn about planning requirements, architecture, infrastructure, data preparation, information delivery, implementation, and maintenance. They'll also find a wealth of industry examples garnered from the author's 25 years of experience in designing and implementing databases and data warehouse applications for major corporations. Market: IT Professionals, Consultants. |
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Page 243
... aggregate fact table . Similarly , the last query must retrieve only 15,600 rows from this aggregate fact table , much less than the 7 million rows . Further , if you precalculate and create another aggregate fact table in which each ...
... aggregate fact table . Similarly , the last query must retrieve only 15,600 rows from this aggregate fact table , much less than the 7 million rows . Further , if you precalculate and create another aggregate fact table in which each ...
Page 244
... aggregate fact tables . Let us explore the possibilities . Multi - Way Aggregate Fact Tables . Please see Figure 11-14 illustrating the differ- ent ways aggregate fact tables may be formed and also read the following descriptions of ...
... aggregate fact tables . Let us explore the possibilities . Multi - Way Aggregate Fact Tables . Please see Figure 11-14 illustrating the differ- ent ways aggregate fact tables may be formed and also read the following descriptions of ...
Page 247
... AGGREGATE SALES FACTS Category Key Time Key Store Key Unit Sales Sales Dollars Store Key Store Name Territory Region DIMENSION DERIVED FROM PRODUCT ... aggregates . In the real world , the AGGREGATE FACT TABLES 247 Aggregation Options.
... AGGREGATE SALES FACTS Category Key Time Key Store Key Unit Sales Sales Dollars Store Key Store Name Territory Region DIMENSION DERIVED FROM PRODUCT ... aggregates . In the real world , the AGGREGATE FACT TABLES 247 Aggregation Options.
Contents
The Compelling Need for Data Warehousing | 1 |
The Building Blocks | 19 |
Review Questions | 37 |
Copyright | |
26 other sections not shown
Other editions - View all
Data Warehousing Fundamentals: A Comprehensive Guide for IT Professionals Paulraj Ponniah Limited preview - 2004 |
Data Warehousing Fundamentals: A Comprehensive Guide for IT Professionals Paulraj Ponniah No preview available - 2004 |
Common terms and phrases
aggregate algorithms analysis applications architecture attributes backup business dimensions changes cluster columns complex components create data cleansing data elements data extraction data loading data marts data mining data model data quality data sources data staging data structures data transformation data warehouse environment data warehouse project data warehousing database DBMS decision deployment dimension table dimensional model end-users example fact table Figure files functions incremental loads information delivery integrated interface marketing MDDB methods metrics MOLAP multidimensional OLAP system OLTP online analytical processing operational systems options package diagram performance physical model pilot platform primary key product dimension programs project team queries and reports records relational ROLAP selection server source data source systems specific staging area standards STAR schema strategic information summary techniques tion types usage users values vendors ware Web-enabled data warehouse