Documentation Techniques Assuming that your group are tasked to prepare a DFD (context diagram and level 0) of this process, how will you convert the narrative steps into symbols that will provide visualization to users? Documentation Techniques Things to know about a context diagram A context diagram is the highest level of DFD providing readers with a summary-level of the system. Flow of data in and out of the system People and Data flow Processes organization Data source that Transformation converts sending and and process data from receiving the data destination inputs to to and from the outputs system Data flow square arrows circleLevel O DFD The number of circles correspond to AP Subsidiary ledger the number of major Connect the steps/Junctions processes with an AP clark arrow. Take note of the sequencing. 5.0 Post 10 AP Start with on 1.0 ledger AP Clerk entity from Receive and which doto Supplier record originated invoice _CD Journal Don't forget the data stores that ww be used in the 20 Prepare different steps Treasury 30 check clerk Approve 4.0 Authorized and sign Record check cash OL clark signatory paymentDocumentation Techniques - Provide visualization of what the system is all about thru the use of symbols 1. UFO (context diagram & level 0) 2. Flowcharts (system. document and program) Documentation Techniques Example of a Payment to business process: vendors/suppliers Major steps involved: 1. Receive supplier's invoice and record liability/payable. 2. Prepare the check. 3. Sign and send the check and cancel the invoice. 4. Record the cash payment. 5. Post the cash payment to the accounts payable ledger. Documentation Techniques Flow of data in and out of the system People and Data flow organization Processes Data source that sending and Transformation receiving the data and converts process to and from the destination data from inputs to system Data flow outputs Context diagram of payment to vendors/suppliers Where is Input data taken from/What is the input In what Who is sending data Invoice particular the data to the Cash process will org,/system disbursements Supplier this input system data need to Who is receiving Cash/Check undergo the data from the system What is the output data Documentation Techniques Things to know about a level 0 DFD A level 0 DFD is breaking down of the process in the context diagram into major functions. Uses the same symbols as a context diagram plus the data stores symbol Storage of data