Table of Contents

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  1. Preface
  2. Analyst Service
  3. Content Management Service
  4. Data Integration Service
  5. Data Integration Service Architecture
  6. Data Integration Service Management
  7. Data Integration Service Grid
  8. Data Integration Service Applications
  9. Metadata Manager Service
  10. Model Repository Service
  11. PowerCenter Integration Service
  12. PowerCenter Integration Service Architecture
  13. High Availability for the PowerCenter Integration Service
  14. PowerCenter Repository Service
  15. PowerCenter Repository Management
  16. PowerExchange Listener Service
  17. PowerExchange Logger Service
  18. SAP BW Service
  19. Search Service
  20. System Services
  21. Test Data Manager Service
  22. Web Services Hub
  23. Application Service Upgrade
  24. Application Service Databases
  25. Connecting to Databases from Windows
  26. Connecting to Databases from UNIX
  27. Updating the DynamicSections Parameter of a DB2 Database

Persisting Virtual Data in Temporary Tables

Persisting Virtual Data in Temporary Tables

A temporary table is a table in a relational database that stores intermediate, temporary data. Complex queries commonly require storage for large amounts of intermediate data, such as information from joins. When you implement temporary tables, business intelligence tools can retrieve this data from the temporary table instead of the SQL data service. This results in an increase in performance.
Temporary tables also provide increased security in two ways. First, only the user of the active session can access the tables. Also, the tables persist while a session is active, and the database drops the tables when the connection closes.
You must configure the Table Storage Connection property of the Data Integration Service before the database administrator creates a temporary table.
Temporary tables for all SQL data services in a Data Integration Service use the same relational database connection. When the connection to the SQL data service is active, you can connect to the SQL data service through a JDBC or ODBC client. The relational database drops temporary tables when the session ends. If the Data Integration Service unexpectedly shuts down, the relational database drops temporary tables on the next Data Integration Service startup.