Embedded systems architecture a comprehensive guide for engineers and programmers
Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 1 ppt
... 1 1 1 1 1 1 1 xv 1Chapter Objectives 2 91 1Why is Data Quality Critical? 292 What is Data Quality? 292 Benefits of Improved Data Quality 295 Types of Data Quality Problems 296 1Data Quality Challenges ... The data in a data warehouse is not as volatile as the data in an operational database is The data in a data warehouse is primarily for query and analysis Data Granularity In an operational system, ... CONTENTS 1 1 1 1 1 1 1 1 1 1Data Transformation 2 71 Data Transformation: Basic Tasks 272 Major Transformation Types 273 Data Integration and Consolidation 275 Transformation for Dimension Attributes...
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Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 2 ppt
... columns: a 10 nonvolatile data dual data granularity dependent data mart disparate data decision support data staging data mining metadata operational systems internal data A B C D E F G H I J roadmap ... metadata contain all of this information about the operational data sources Extraction and Transformation Metadata Extraction and transformation metadata contain data about the extraction of data from ... transformation for a data warehouse more involved than for an operational system? Again, as you know, data for a data warehouse comes from many disparate sources If data extraction for a data warehouse...
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Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 3 potx
... recap the major architectural components as discussed in Chapter 2: ț Source data Production data Internal data Archived data External data ț Data staging Data extraction Data transformation Data ... documents, and spreadsheets ț External data sources Data Staging ț Data mapping between data sources and staging area data structures ț Data transformations ț Data cleansing ț Data integration Data Storage ... ț Classes of analysis ț Front-end DSS applications Metadata ț Operational metadata ț ETL (data extraction/transformation/loading) metadata ț End-user metadata ț Metadata storage Management and...
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Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 5 docx
... SIGNIFICANT ROLE OF METADATA ț Data model for special databases for OLAP ț Schedules for retrieving data for OLAP Challenges for Metadata Management Although metadata is so vital in a data warehouse ... incremental loads Data loading job streams Data Storage ț ț ț ț ț ț Data models for centralized data warehouse and dependent data marts Subject area groupings of tables Data models for conformed data ... target warehouse data models, source-staging area mappings, staging areawarehouse mappings, data extraction rules, data transformation rules, data cleansing rules, data aggregation rules, data...
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Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 6 potx
... access the customer demographics in the data warehouse The customer data as an integrated whole lacks data quality DATA ACCURACY DATA INTEGRITY DATA QUALITY DATAQUALITY Specific instance of an ... major functional areas of the data warehouse We reviewed the capture and use of metadata in the three areas of data acquisition, data storage, and information delivery Metadata in data acquisition ... unconditionally adds the incoming data, preserving the DATA LOADING DATA STAGING DATA STAGING Key Data 123 AAAAA 234 BBBBB 345 CCCCC Key Data 123 AAAAA 234 BBBBB 345 CCCCC BEFORE Load B EF O R AFTER...
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Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 7 ppt
... think data quality is critical in a data warehouse Explain how data quality is much more than just data accuracy Give an example Briefly list three benefits of quality data in a data warehouse ... Committee Agree on a suitable data quality framework Institute data quality policy and standards Select high impact data elements and determine priorities Define quality measurement parameters and ... QUALITY INITIATIVE DATA CONSUMER (User Dept.) 309 DATA INTEGRITY SPECIALIST (IT Dept.) DATA QUALITY INITIATIVES DATA PRODUCER (User Dept.) DATA EXPERT (User Dept.) DATA CORRECTION AUTHORITY (IT...
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Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 8 potx
... WAREHOUSE Data Storage Underlying Technologies Functions and Features ROLAP Data stored as relational tables in the warehouse Detailed and light summary data available Very large data volumes All data ... retrieval Summary data access from MDDB, detailed data access from warehouse Sparse matrix technology to manage data sparsity in summaries MOLAP Data stored as relational tables in the warehouse Various ... interfaces for your data warehouse? Why is data security a major concern for a Web-enabled data warehouse? List any four features of the data Webhouse Name any two approaches for an OLAP system...
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Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 9 pdf
... physical storage as files, blocks, and records Data Staging Area Data Extract Flat Files Relational Database data files (transformed data) Relational Database index files Load Image Flat Files Figure ... 18-6 Data Warehouse Repository Relational Database data files (warehouse data) Partitioned Physical Files Relational Database index files Detailed data and light summaries OLAP System Physical ... data marts, one by one one by one data PRACTICAL APPROACH - First departmental data mart Next departmental data mart Next departmental data mart Next departmental data mart Gather departmental requirements,...
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Data Warehousing Fundamentals A Comprehensive Guide for IT Professionals phần 10 pot
... access, maintain, manage, and safeguard data in databases DD Data Dictionary A catalog or directory in a database management system that stores the data structures and relationships DDL Data Definition ... tables Data warehouse navigation Data granularity and aggregate tables Source systems and data extractions Data transformation and cleansing rules Business terms and meanings Query templates Preformatted ... huge amounts of data that has taken years to gather and accumulate The historical data may go back 10 or even up to 20 years Before the data arrives at the data warehouse, you know that it has...
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data warehousing fundamentals a comprehensive guide for it professionals phần 4 ppsx
... information WHY METADATA IS IMPORTANT 181 METADATA ESSENTIAL FOR IT Source data structures Source platforms Data extraction methods External data Data transformation rules METADATA VITAL FOR ... definitions: ț ț ț ț ț ț ț ț ț Data about the data Table of contents for the data Catalog for the data Data warehouse atlas Data warehouse roadmap Data warehouse directory Glue that holds the data ... which metadata is significant for IT: ț ț ț ț ț ț ț ț Data extraction from sources Data transformation Data scrubbing Data aggregation and summarization Data staging Data refreshment Database design...
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data warehousing fundamentals a comprehensive guide for it professionals phần 5 pptx
... SIGNIFICANT ROLE OF METADATA ț Data model for special databases for OLAP ț Schedules for retrieving data for OLAP Challenges for Metadata Management Although metadata is so vital in a data warehouse ... incremental loads Data loading job streams Data Storage ț ț ț ț ț ț Data models for centralized data warehouse and dependent data marts Subject area groupings of tables Data models for conformed data ... target warehouse data models, source-staging area mappings, staging areawarehouse mappings, data extraction rules, data transformation rules, data cleansing rules, data aggregation rules, data...
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Tài liệu A Marketing Guide for Small and Medium Sized Primary Forest Products Processors pdf
... and trade II Fundamentals of Marketing A Marketing Guide for Small and Medium Sized Primary Forest Products Processors publications is typically based upon the number of words and size, it can ... to guide your thoughts and ideas Each question, once considered and answered, will eventually facilitate your process of forming a marketing plan A Marketing Guide for Small and Medium Sized Primary ... instead They were transformed into marketing managers, marketing engineers and marketing associates, and some even became marketing representatives.” —Lamont C Blake Marketing Consultant As can...
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