Topics:

• Using Centrally Controlled Databases
• Using the Multi-Threaded SU Reporting Facility
• Messages From the FOCUS Database Server
• Using MODIFY or Maintain With SU
• Protecting FOCUS Database Server Transactions
• Performance Considerations
• SU Profile Commands for COMMIT and ROLLBACK

This chapter discusses reading and modifying centrally controlled databases using the FOCUS language. The chapter is addressed to users and those who design FOCUS requests.

All FOCUS commands can be used in SU with the following restrictions:

• The SCAN and FSCAN facilities are read-only.
• If you combine databases with the COMBINE command, all databases must be controlled by the same FOCUS Database Server.
• Users cannot use the REBUILD utility or the RESTRICT command, or issue the CREATE command for a database controlled by the FOCUS Database Server.