Implementation Guide › Implementation › Business Logic Scripting (Business Logic Expert) › Inside the Business Logic

Inside the Business Logic

All Business Logic is located in an event-driven script, based on the syntax of VBScript. Each event that reaches the Business Logic, triggers an event handler.

The following types of events are sent by the engine to be evaluated by the Business Logic:

• Raw Data Events. Actual raw data inputs on which the Business Logic bases its results. The engine sends only the relevant Raw Data events based on the registration of the formula.
• Engine Events. Events sent by the engine implicitly that reflect the properties of the Metric definition, such as, timeslot definition and tracking period.
• Intermediate events. Events generated by other Business Logic scripts and can be used within another one.

The Business Logic formula contained within the Metric definition is what evaluates the events and outputs a service level result on which the reports are based. Depending on these service level results and the Domain definition, the engine also produces a deviation result (if a service level target has been applied to the Metric). The results produced are stored in a database table called T_PSL. It is this table that is queried by the Report Wizard when generating the reports, hence, all report data is precalculated to ensure that reporting performance is maximized.