Billing system Essay

The Information Flow Model (IFM) is used to examine the man-made lakes and destination of instruction head for the hills, which is required to execute the business process as shown in Figure 3.5.In IFM, study or data generators and processors ar brought together to explain the flow. This could be documents, e-mail, or voicemail. The contents of the flow could be text, images, or diagrams. The purpose of the flow is to take the process further to its logical conclusion. For example, a client order is to be processed for spoken language or to be rejected, and necessary data or information input has to be provided progressively in the process.IFM is generally a high-level model showing master(prenominal) flows, internal flows of information from sources, such as product catalogs, and manufacturing schedules. Customer profiles and accounting information are non shown. These are presumed to be present.In an information flow model, each processing play is described as one of the following stage classes1. info Supply where data suppliers forward information into the system.2. Data acquisition the stage that accepts data from external suppliers and injects it into the system.3. Data Creation internal to the system, data may be generated and indeed forwarded to another processing stage.4. Data Processing any stage that accepts input and generates output (as well as generating side effects).5. Data Packaging any breaker point at which information is collated, aggregated and summarized for reporting purposes.6. determination Making the point where human interaction is required.7. Decision Implementation the stage where the decision made at a decision-making stage is executed, which may affect other processing stages or a data delivery stage.8. Data Delivery the point where packaged information is delivered to a known data consumer.9. Data exercise as the data consumer is the ultimate user of processed information, the consumption stage is the exi t stage of the system.Data moves between stages through directed information channels pipelines indicating the flow of information from one processing stage to another and the direction in which data flows. An information flow model is represented by the confederacy of the processing stages connected by directed information channels. Once the flow model has been constructed, names are assigned to each of the stages and channels. An information flow model can be used to identify the source of a data quality problem. The effects of a data quality problem might unvarnished themselves at different stages within an information flow, perhaps at different data consumption stages.However, what may appear to be multiple problems may all be related to a single point of failure that takes place earlier in the processing. By identifying a set of data-quality expectations and creating validation rules that can be imposed at the entry and exit of each processing stage, we can trace through the information flow model to the stage at which the data quality problem occurred. Fixing the problem at the source will have a beneficial effect across the board, as all later(prenominal) manifestations should be eliminated