COMPUTERIZED SYSTEM Essay

Systems techniques are tools used in the analysis, design, and documentation of system and subsystem descents. They are mostly graphical (pictorial) in nature.Systems techniques are used by accountants who do systems work. certification includes the following types of toolsNarratives (written descriptions)FlowchartsDiagramsOther written materialFor this subject, we only need to prove two (2) of the most common documentation tools Data flow diagrams vivid descriptions of the sources and destinations of selective information. They showWhere information comes fromHow it flowsThe processes performed on itWhere it goesInclude three typesDocument flowcharts come across 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 computer program DATA FLOW DIAGRAMS A data flow diagram (DFD) graphically des cribes the flow of data inside an organization. It is used to Document existing systemsPlan and design new systems at that place is no black-and-white approach to developing a DFD.Data sources and destinations fall out as squaresRepresent organizations or individuals that send or receive data used or produced by the system An item can be both a source and a destinationData flows get along 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.