Book Image

Oracle Warehouse Builder 11g R2: Getting Started 2011

Book Image

Oracle Warehouse Builder 11g R2: Getting Started 2011

Overview of this book

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.
Table of Contents (17 chapters)
Oracle Warehouse Builder 11gR2: Getting Started 2011
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Building a code template mapping


Code template mappings are not created under the Mappings node where we've created all our previous regular mappings because they are implemented differently than the regular mappings. To recall, regular mappings were created in the Mappings node, which fell under the Oracle Database node for our project. That is because mappings up until now were mostly only executed in an Oracle database. There are exceptions to that such as flat file loads using the SQL Loader utility or SAP mappings, but for the most part, existing mapping execute in Oracle databases. With the introduction of code template mappings, a single mapping can now be executed across two or more databases and so the node to hold code template mappings was added at the same level as the Databases node in the Projects Navigator hierarchy. It is just to hold all code template mappings, and so is called Template Mappings and it is highlighted in the image below for reference:

All objects created...