COMPUTERIZED SYSTEM Essay

Systems techniques are tools used in the analysis, design, and documentation of system and subsystem relationships. 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)FlowchartsDiagramsformer(a) written materialFor this subject, we only need to discuss two (2) of the most common documentation tools data course diagramsGraphical descriptions of the sources and speechs of data. They show Where data comes fromHow it flowsThe processes performed on itWhere it goesInclude three typesDocument flowcharts divulge 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 describes the flow of data within an organization. It is used to Document active systemsPlan and design new systemsThere is no black-and-white approach to developing a DFD. information sources and destinationsAppear 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 flowsAppear as arrowsRepresent the flow of data between sources and destinations, processes, and data stores As you believably surmised(GUESS) from the previous slides, if a data flow is two-way, use a bi-directional arrow.If two data elements flow together, and then the use of one data flow line is appropriate.