COMPUTERIZED SYSTEM Essay Example for Free

COMPUTERIZED SYSTEM EssaySystems techniques are tools apply in the analysis, design, and documentation of system and subsystem bloods. They are largely graphical (pictorial) in nature.Systems techniques are used by accountants who do systems work.Documentation includes the following types of toolsNarratives (written descriptions)FlowchartsDiagramsOther written materialFor this subject, we only need to discuss deuce (2) of the most common documentation tools Data flow diagramsGraphical descriptions of the sources and destinations of selective information. They show Where data comes fromHow it flowsThe processes performed on itWhere it goes include three typesDocument flowcharts describe the flow of documents and information between departments or units. System flowcharts describe the relationship between inputs, processing, and outputs for a system. Program flowcharts describe the sequence of logical operations performed in a estimator program DATA FLOW DIAGRAMS A data flow d iagram (DFD) graphically describes the flow of data within an organization. It is used to Document existing systemsPlan and design new systemsThere is no black and white approach to developing a DFD.Data sources and destinationsAppear as squaresRepresent organizations or individuals that send or receive data used or produced by the system An item can be twain a source and a destinationData flowsAppear as arrowsRepresent the flow of data between sources and destinations, processes, and data stores As you probably surmised(GUESS) from the previous slides, if a data flow is two-way, use a bi-directional arrow.If two data elements flow together, then the use of one data flow line is appropriate.