| Architect: Data
Developing a Knowledge Module in Oracle Data Integrator
Learn how to build your very own Integration Knowledge Module for fast time-to-production in data integration design.
By Uli Bethke
Published June 2009
Knowledge modules (KMs) in Oracle Data Integrator are components that implement reusable transformation and ELT (extract, load, and transform) strategies across different technologies. One example of this is extracting data through change data capture from Oracle Database 10g and loading the transformed data into a partitioned fact table in Oracle Database 11g, or creating timestamp-based extracts from a Microsoft SQL Server database and loading this data into a Teradata enterprise data warehouse.
Oracle Data Integrator ships with various predefined KMs. You can directly use these in your ELT interfaces (the equivalent of an Oracle Warehouse Builder mapping) or adapt them to your specific requirements. Oracle Data Integrator implements five different types of KMs. Each of them covers one phase in the transformation process from source to target. The three most important types of modules are the integration knowledge module (IKM), the loading knowledge module (LKM), and the check knowledge module CKM.
In this article, we will create a new IKM. Our requirement for the IKM is to load the partitioned Sales fact table in the Sales History (SH) sample schema. In order to improve load performance of a fact table, we make the foreign key constraints and the bitmap indexes unusable for the duration of the load. Postload, these will be re-enabled. As part of the IKM, we will also include an optional step that will allow us to enable extended trace for the duration of the interface execution.
Prerequisites and Resources
This article is based on Oracle Database 11g (22.214.171.124.0) and Oracle Data Integrator 10.1.3.4.0.
I assume that you have already set up an Oracle Data Integrator master and work repository. See "Oracle Data Integrator: Getting Started with an ETL Project" (PDF) for details.Here are some more helpful resources: