Table of Contents

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  1. Preface
  2. Introduction to Data Validation Option
  3. Repositories
  4. XML Data Source
  5. Tests for XML Data Sources
  6. Connections
  7. Expressions
  8. Table Pairs
  9. Tests for Table Pairs
  10. Single-Table Constraints
  11. Tests for Single-Table Constraints
  12. Examples of Tests from Spreadsheets
  13. SQL Views
  14. Lookup Views
  15. Join Views
  16. Aggregate Views
  17. Business Intelligence and Reporting Tools Reports
  18. Dashboards
  19. DVOCmd Command Line Program
  20. Troubleshooting
  21. Appendix A: Datatype Reference
  22. Appendix B: Reporting Views
  23. Appendix C: Metadata Import Syntax
  24. Appendix D: Jasper Reports
  25. Appendix E: Glossary

Data Validation Option User Guide

Data Validation Option User Guide

Data Sampling Processing

Data Sampling Processing

Data sampling is when Data Validation Option runs tests on a sample of data rather than the entire source. The PowerCenter Integration Service or a relational data source can generate the data sample.
By default, the PowerCenter Integration Service generates the data sample. The PowerCenter Integration Service reads all records from the source when it generates the data sample.
To increase run-time performance, you can configure IBM DB2, Microsoft SQL Server, Oracle, and Teradata to generate the data sample. After the database generates the data sample, the PowerCenter Integration Service reads the sample data only.