The compiled version of an XLANG schedule drawing is an XLANG schedule, and the XLANG Scheduler Engine runs this schedule. The XLANG Scheduler Engine monitors and controls the business process described in the XLANG schedule, based on the actions, rules, and error-handling processes that are defined for the XLANG schedule.

The following topics are covered in this section:

• XLANG Overview
  
  
• Instance management
  
  
• Persistence
  
  
• Dehydration and Rehydration
  
  
• Data Handling