Context-sensitive staff queries in business processes
Original Publication Date: 2004-Aug-13
Included in the Prior Art Database: 2004-Aug-13
Workflow management systems manage the execution of business processes. The major constructs in drawing processes are activities and control connectors. The activities describe the tasks to be performed, and the control connectors describe the potential sequence in which the activities are to be carried out. Activities, that need to be carried out by people, are associated with a staff query which defines, typically specified in organizational terms, which employee(s) are assigned to the activity. Simple staff queries, as used in todays workflow management systems, only allow referencing process data within the query itself. This limits the power of staff queries significantly. It is proposed to enhance staff queries by splitting a staff query into a set of staff queries and associating each of the staff queries with preconditions that can reference process data.
-sensitive staff queries in business processes sensitive staff queries in business processes
Workflow management systems manage the execution of business processes . Those business processes are typically modeled as direct, acyclic, colored and weighted graphs. The major constructs in drawing processes are activities and control connectors. The activities describe the tasks to be performed, and the control connectors describe the potential sequence in which the activities are to be carried out. Figure 1 shows schematically the structure of such a process graph.
Figure 1 Process Model
Activities are represented as named circles; the name typically describes the purpose of the activity. Activities come in various flavors to address the different tasks that may need to be performed. They may have different activity implementations to meet these diverse needs. Program activities are performed by an assigned program, process activities are performed by another process, and blocks implement a macro with a built-in do-until loop.
Control connectors are represented as arrows; the head of the arrow describes the direction in which the flow of control is moving through the process . The activity where the control connector starts is called the source activity; where it ends is called the target activity. When more than one control connector leaves an activity, this indicates potentially parallel work.
Activities describe the actual work that needs to be performed . Figure 2 shows the inner details of an activity and indicates what is being done in the individual parts of an activity.
Figure 2 Fine Structure of Activities
The query on organization database and proper implementation form the core of the activity.
The query against the organization database specifies in organizational terms who should carry out the activity. Since people in the organization are typically called staff, this query against the organizational database is also called a staff query . When the activity is ready for processing, this query is carried out and returns a set of users that are assigned to the activity. The process of finding the appropriate people is called staff resolution.
The proper implementation specifies what is used to carry out the activity and how it is to be carried out.
The implementation could be a program that is executed or another process that is invoked.
The combination of the proper implementation and the query against the organization database is called a task . When the activity needs to be carried out, staff resolution returns the list of users that need to be assigned to the activity . Multiple users are selected for an activity, on the theory, that the more people know that a work request requires their action, the more likely it is that the work request is performed soon. The workflow management system ensures that only one user performs the requeste...