Presentation on theme: "DFD, LDS, ELH Inter-Relationships"— Presentation transcript:
1 DFD, LDS, ELH Inter-Relationships DFDs, LDSs, and ELHs are closely inter-related in the required systemcan be cross-checked against each otherLogicalDataDataFlowStructureDiagramsEntityLifeHistories
2 LDS, DFD Inter-Relationship Diagram Logical Data StructureData Flow DiagrambManager1Customer nameRegister New CustomerAccount No.CustomernameAccountCustomerNo.AD1Customer DetailsBBank AccountD2Bank AccountsCustomer/ Account LinkBalanceAmountcC2EmployerRecord Deposits and WithdrawalsDdTransactionClerkEA,B,C Data Stores contain Entities D Entities contain Attributes E Attributes are in Entities and Data FlowsENTITY DESCRIPTIONBank AccountAccount No.BalanceDate opened
3 LDS, ELH Inter-Relationship Diagram Entity Life HistoryLogical Data StructureBank AccountCustomerAAccountAccount LifeOpenedBank AccountCustomer/ Account LinkBalance*ChangeooTransactionCreditDebitENTITY DESCRIPTIONCBank AccountAccount codeBBalanceDate opened
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