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  1. Preface
  2. Introduction to PowerExchange
  3. DBMOVER Configuration File
  4. Netport Jobs
  5. PowerExchange Message Logs and Destination Overrides
  6. SMF Statistics Logging and Reporting
  7. PowerExchange Security
  8. Secure Sockets Layer Support
  9. PowerExchange Alternative Network Security
  10. PowerExchange Nonrelational SQL
  11. DTLDESCRIBE Metadata
  12. PowerExchange Globalization
  13. Using the PowerExchange ODBC Drivers
  14. PowerExchange Datatypes and Conversion Matrix
  15. Appendix A: DTL__CAPXTIMESTAMP Time Stamps
  16. Appendix B: PowerExchange Glossary

Optimized Read Process for Nonrelational Data Sources

Optimized Read Process for Nonrelational Data Sources

PowerExchange optimizes the read process for nonrelational database (NRDB) and file sources on z/OS. This optimization applies to SQL queries that contain a WHERE clause.
The following data sources support the NRDB optimized read process:
  • Adabas
  • Datacom
  • IDMS
  • IMS (DL/1 and ODBA)
  • VSAM (KSDS)

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