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PARTI PHYSICAL SPECIFICATIONS
DATA FLOW DIAGRAMS
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action diagrams ADDR auto AUTO-CARD AVAILABLE-TAPES candidate keys clerk client common processing routine components condition context diagram control flow CUSTM-ADDR CUSTM-NAME CUSTOMER-FILE CUSTOMER-NAME customer's CUSTOMERS-ACCOUNT data base data dictionary data flow diagram data-base decision table decision tree defined E-R diagram ECA ECA elementary data elements entry essential fundamental activity essential memory event diagram example Figure foreign key fundamental activity EFA group data elements IAA ECA identify infrastructure input and output input data flow input/output processing chart INVOICE logic mini-spec MINI-SPECIFICATION notation object data stores output data flow PAYMENT performed physical item PRICE primary key process 4.0 processes and data Processor Requirements pseudocode real-time systems RECEIPT-COPY-1 relationship RENTALS responsible second normal form SHIPPING-INVOICE shown in Fig statements structured specification TAPE-CHIP TAPE-LIBR TAPE-NUMBER target process third normal form TRANSACTION update users Video Tape Wholesaler