Abstract: In one embodiment, a method for handling subtasks within a business task includes providing a plurality of user interfaces (UIs) pertaining to the business task having at least one subtask step. The subtask step has a subtask defined within the business task by an intermediate user to reuse a portion of another business task. The method further includes allowing an end user to navigate back and forth through the plurality of UIs.

Abstract: An advanced message queuing system is integrated into a database system. A queue is an ordered list of messages. Messages are requests for processing by an application. Messages are database objects and can represent events or data. Messages comprise user data and control information such as a queue name. Each queue is part of a table in a relational database. A queue table holds a set of queues. Dictionary tables store configuration information describing queues and queue tables. Messages are entered into a queue by instructing the database system using an enqueuing command attached to a message and control information. The control information describes how to order, schedule, and execute the message, and can include a result queue name into which a result message is written after execution. The system responds to a dequeuing command by delivering a copy of a message from the queue. A user can define message order within a queue, message delay factors, and exception processing.