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Oracle Database 2 Day + Data Warehousing Guide Oracle® Database 2 Day + Data Warehousing Concepts and Design Guide 12c Release 1 (12.1) E17751-05 July 2012 Beta Draft ORACLE CONFIDENTIAL. For authorized use only. Do not distribute to third parties. Oracle Database 2 Day + Data Warehousing Concepts and Design Guide, 12c Release 1 (12.1) E17751-05 Copyright © 2007, 2012, Oracle and/or its affiliates. All rights reserved. Primary Author: Paul Lane Contributor: The Oracle Database 12c documentation is dedicated to Mark Townsend, who was an inspiration to all who worked on this release. Contributor: Hermann Baer, Charlie Berger, John Haydu, George Lumpkin, Valarie Moore, Ananth Raghavan, Jack Raitto, Sankar Subramanian, Margaret Taft, Mark Townsend, Mark Van de Wiel, Andy Witkowski This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intellectual property laws. 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This document is not part of your license agreement nor can it be incorporated into any contractual agreement with Oracle or its subsidiaries or affiliates. Contents Preface ................................................................................................................................................................ vii Audience...................................................................................................................................................... vii Documentation Accessibility.................................................................................................................... vii Related Documents .................................................................................................................................... vii Conventions ................................................................................................................................................ vii Part I Building Your Data Warehouse 1 Introduction to Data Warehousing Concepts About This Guide..................................................................................................................................... 1-1 What This Guide Is Not..................................................................................................................... 1-1 What Is a Data Warehouse?.................................................................................................................... 1-1 The Key Characteristics of a Data Warehouse............................................................................... 1-3 Common Oracle Data Warehousing Tasks .................................................................................... 1-3 Concepts Illustrated in This Guide ...................................................................................................... 1-4 Part II Oracle’s Data Warehouse Architecture 2 Data Warehouse Reference Architecture About Oracle’s Data Warehouse Reference Architecture ................................................................ 2-1 How Requirements are Evolving..................................................................................................... 2-1 Requirements of a Reference Architecture..................................................................................... 2-3 Packaged Applications and the Reference Architecture .............................................................. 2-4 About Data Sources ................................................................................................................................. 2-4 About Data Warehouse Layers .............................................................................................................. 2-5 Staging Data Layer............................................................................................................................. 2-5 Foundation Data Layer...................................................................................................................... 2-6 Access and Performance Layer ........................................................................................................ 2-6 About Business Intelligence Tools ....................................................................................................... 2-7 About ETL and the Data Loading Process........................................................................................... 2-8 About Security .......................................................................................................................................... 2-9 About Information Provisioning Process......................................................................................... 2-10 Part III Modeling Beta Draft iii 3 Data Warehousing Logical Design Logical Versus Physical Design in Data Warehouses....................................................................... 3-1 Creating a Logical Design....................................................................................................................... 3-2 Comparing Schema Design Approaches........................................................................................ 3-2 About Third Normal Form Schemas ...................................................................................................
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