This redbook offers detailed coverage of DB2/400 data warehousing functions. It provides suggestions, guidelines, and practical examples about when and how to effectively use data warehousing support offered by DB2/400. This redbook contains information that you may not find anywhere else, including tips and techniques for the following functions:
- Dynamic Bitmap Indexes
- Encoded Vector Indexes (EVIs)
- Join Support
- Parallelism in Data Access Methods
- Parallel Index Build and Parallel Data Load
By reading this redbook, you gain a broad understanding of the tools and utilities that you can use for the analysis of the access plans created by DB2/400 Optimizer for typical Star Schema queries. This, in turn, helps you create well performing queries that take advantage of the new functions implemented in V4R2 and V4R3.
The last part of this redbook covers sample data warehousing queries that we used to demonstrate DB2/400 scalabilty and performance gains. You can achieve these gains with help from the new indexing techniques: dynamic bitmap indexing and EVIs.
This redbook is intended for system administrators, database administrators, and data warehousing specialists. It specifically focuses on their needs to implement data warehousing solutions for the DB2/400 relational database management system, which is integrated into the OS/400.
