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Oracle Warehouse Builder 11g R2: Getting Started 2011
Oracle Warehouse Builder 11g R2: Getting Started 2011

Oracle Warehouse Builder 11g R2: Getting Started 2011: Extract, Transform, and Load data to build a dynamic, operational data warehouse

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Oracle Warehouse Builder 11g R2: Getting Started 2011

Chapter 2. Defining and Importing Source Data Structures

The Warehouse Builder software and Oracle database have been installed, and we're ready to begin building our data warehouse. The first thing we have to do is define what our sources of data will be. If we are going to build a useful data warehouse, we have to know what kinds of information our users are going to need out of the warehouse. To know that, we have to know the following:

  • The format in which the data is currently stored and where it is stored.

  • Whether there is a transactional database currently in use or not, which supports day-to-day operations and from which we'll be pulling the data.

    A transactional database is different from a data warehouse database in that it is designed to support the day-to-day transactions that keep an organization running.

  • Whether the database is an Oracle database or another vendor's database such as Microsoft SQL Server.

  • Whether there are any flat files of information saved from database tables or...

Preliminary analysis


In any data warehouse project, we are going to need to do some up-front analysis to determine what data will need to be captured into our warehouse. The analysis will tell us where the data is located, and in what format, so that we can begin to define our source data structures in the Warehouse Builder. In our case, we will presume that we have interviewed the management at the ACME Toys and Gizmos company and they have indicated the following:

  • The high-priority information that they would like to see from this data warehouse project is sales-related data for all their stores

  • They don't have an idea about the comparative sales in the various stores, so they need some way to view all that data together to do an analysis that shows how well, or poorly, the stores are doing

  • In the future, they would also like to be able to compare store sales with their website sales, but that will not be required for this first data warehouse we build

We are doing a very simple analysis...

An overview of Warehouse Builder Design Center


The Design Center is the main graphical interface that we will be using to design our data warehouse, but we also use it to define our data sources. So let's take some time at this point to go over the user interface and familiarize ourselves with it. Release 11gR2 of the Warehouse Builder has a completely updated interface, using the Fusion Client Platform style and presents an Integrated Development Environment (IDE) that is the same core IDE prevalent in other Oracle applications such as Oracle JDeveloper and SQL Developer. Anyone who has used either of those Oracle products, will immediately recognize the overall design. It is a much improved, more intuitive interface than the previous one from release 10gR2 and 11gR1 and provides such improvements as automatic layout, dockable panels, and zoom capabilities in editors within the IDE. The screenshots throughout the book have all been updated to reflect the new interface. We launch Design...

Importing/defining source database object metadata


Now that we've been introduced to the Design Center, it's time to make use of it to import or define the metadata about our source database objects. Metadata is data that describes our data. We are going to tell the Warehouse Builder what our source database objects look like and where they are located, so that it can build the code necessary to retrieve the data from them when we design and run mappings to populate our data warehouse. The metadata is represented in the Warehouse Builder as objects corresponding to the type of the source object. So if we're representing tables in a database, we will have tables defined in the Warehouse Builder.

We have a couple of options for defining the source database objects. We can manually input the definitions into Design Center Projects tab ourselves, or we can choose to have the Warehouse Builder automatically import the descriptions of our data for us. As we like having the computer do the work...

Summary


That was a lot of information presented in this chapter. We began with a brief discussion about the source data for our scenario using the ACME Toys and Gizmos company. We then went through the process of importing metadata about our sources, and saw how to import metadata from an Oracle database as well as a flat file. Because we are dealing with a non-Oracle database, we were also exposed to configuring the Oracle database to communicate with a non-Oracle database using Oracle Heterogeneous Services. We also saw how to configure it for generic connectivity using the supplied ODBC agent. We worked through the process of manually creating table definitions for source tables for a SQL Server database.

At this point, you should run through these procedures to import or define the remaining tables that were identified in the source databases. For this, you can use the procedures we walked through above for practice. We'll be using the SQL Server database tables for the POS transactional...

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Key benefits

  • Build a working data warehouse from scratch with Oracle Warehouse Builder
  • Cover techniques in Extracting, Transforming, and Loading data into your data warehouse
  • Use a multi-dimensional design with an underlying relational star schema
  • This second edition covers great new features of 11gR2 such as the new user interface and a whole new chapter on code templates that implement knowledge module functionality from Oracle Data Integrator

Description

In today's economy, businesses and IT professionals cannot afford to lag behind the latest technologies. Data warehousing is a critical area to the success of many enterprises, and Oracle Warehouse Builder is a powerful tool for building data warehouses. It comes free with the latest version of the Oracle database.Written in an accessible, informative, and focused manner, this book will teach you to use Oracle Warehouse Builder to build your data warehouse. Covering warehouse design, the import of source data, the ETL cycle and more, this book will have you up and running in next to no time.This book will walk you through the complete process of planning, building, and deploying a data warehouse using Oracle Warehouse Builder. By the book's end, you will have built your own data warehouse from scratch.Starting with the installation of the Oracle Database and Warehouse Builder software, this book then covers the analysis of source data, designing a data warehouse, and extracting, transforming, and loading data from the source system into the data warehouse. You'll follow the whole process with detailed screenshots of key steps along the way that have all been updated for the new Fusion Client Platform interface in 11gR2, alongside numerous tips and hints not covered by the official documentation. You’ll finish up with a brand new chapter on code templates where you’ll implement a complete mapping using JDBC connectivity and code template mappings.

Who is this book for?

This book is a good starting point for database engineers, administrators, and architects who are responsible for data warehouse projects and need to design them and load data into them. If you are someone who wants to learn Oracle Warehouse Builder and expand your knowledge of the tool and data warehousing, this is an ideal book for you. No prior data warehouse or database experience is presumed. All new database and data warehouse technical terms and concepts explained in clear easy-to-understand language.

What you will learn

  • Configure your Oracle database to communicate with a non-Oracle database using Oracle Heterogeneous Services
  • Build, view, and edit a cube and its dimensions, using Warehouse Builder Wizards and the Data Object Editor
  • Discover the underlying star schema relational structure that Warehouse Builder will build to implement your cube and dimensions
  • Recognize what a staging area is, and build a staging table and mapping to load it from SQL Server database tables
  • Master various operators for use in mappings, for the transformation and flow of data
  • Build and execute mappings to load dimensions and a cube using the Warehouse Builder Mapping Editor and Control Center Manager
  • Detailed explanation of the new interface in 11gR2
  • Implement JDBC connectivity to a remote database and access source data using a code template mapping
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Publication date, Length, Edition, Language, ISBN-13
Publication date : May 16, 2011
Length: 424 pages
Edition : 1st
Language : English
ISBN-13 : 9781849683449
Vendor :
Oracle

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Product Details

Publication date : May 16, 2011
Length: 424 pages
Edition : 1st
Language : English
ISBN-13 : 9781849683449
Vendor :
Oracle

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Oracle Warehouse Builder 11g R2: Getting Started 2011
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Table of Contents

10 Chapters
An Introduction to Oracle Warehouse Builder Chevron down icon Chevron up icon
Defining and Importing Source Data Structures Chevron down icon Chevron up icon
Designing the Target Structure Chevron down icon Chevron up icon
Creating the Target Structure in OWB Chevron down icon Chevron up icon
Extract, Transform, and Load Basics Chevron down icon Chevron up icon
ETL: Putting it Together Chevron down icon Chevron up icon
ETL: Transformations and Other Operators Chevron down icon Chevron up icon
Validating, Generating, Deploying, and Executing Objects Chevron down icon Chevron up icon
Extra Features Chevron down icon Chevron up icon
Code Template Mappings Chevron down icon Chevron up icon

Customer reviews

Top Reviews
Rating distribution
Full star icon Full star icon Full star icon Half star icon Empty star icon 3.7
(6 Ratings)
5 star 33.3%
4 star 33.3%
3 star 16.7%
2 star 0%
1 star 16.7%
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Stanley Jul 23, 2011
Full star icon Full star icon Full star icon Full star icon Full star icon 5
The purpose pf this book is to introduce the Oracle Warehouse Builder and use it to design and build your first data warehouse. By following author's carefully designed components and instructions, you will easily achieve that goal. See more details on [..]
Amazon Verified review Amazon
Kate Sep 11, 2014
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Very helpful!
Amazon Verified review Amazon
Keith Lamond Mar 26, 2013
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
Really liked the content of the book but found I needed to switch between pages. This was quite difficult on the kindle.
Amazon Verified review Amazon
Surachart Opun Jul 08, 2011
Full star icon Full star icon Full star icon Full star icon Empty star icon 4
This book has 10 chapters. When you start with this book. You will learn from good samples (real system in the world). It'll helpful, if you follow software required before start it (just suggest). Each chapters, which shows good layout, pictures and steps. Who can read this book? Sure... If you are beginner with Oracle Warehouse Builder, This book will help you with installation, configuration, architecture, etc... If you are immediate reader with Oracle Warehouse Builder, This book will teach you from good samples.However, you can learn more and more... from this book. Because You will get idea for designing the Target Structure(Data warehouse design, Dimensional design and ..), ETL, Using more with OWB(validating,generating,deploying and executing objects) and Extra Features. When you read this book finish, You will understand Data Warehousing and be able to use Oracle Warehouse Builder.
Amazon Verified review Amazon
Amazon Customer Feb 11, 2015
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
All in all a well written book which delivers on the cover's promise. So why didn't I give 5 Stars?First I think two areas are missing: Control Flows and Parameters. Of course you can always this to be beyond the scope of a "Getting Started" Book, but in 15 years DWH projects I have not seen an environment where you can get by without this.Secondly the Kindle Edition: I like EBooks, I like the Kindle app and the flexibilty across a wide range of platforms. I have not purchased Hardcopies of Fiction for years. However it's different with non fiction particularly programming / development guides like this one. Working on WIndows Client Software, Kindle Software runs in App Mode, so I would need multiple Monitors to look at Book and OWB client side by side (possibly there are ways to install Kindle Software on Windows 8 as a windowed application, but I don't know how). In addition, Illustrations in the book cannot be zoomed (haven't found any stting to scale them - as a result on a 24" 4k Screen they are tiny). The upside for technical books on Kindle is the search and that you get to put in nannotations - however both of these are much more useful in reference books as opposed to a getting started guide such as this, which you tend to work through front to back ...
Amazon Verified review Amazon
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