低碳出行,绿色你我.ppt

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1、TransactionProcessingSystemsManualorautomatic–allbusinessessystematicallyprocesstransactionsFunction:processroutine,day-to-daybusinessactivitiesComputerizedTPS:BatchOnline(real-time,OLTP)Thefoundationofbusinesssystems1MIS175Spring2002Chapter9MIS221BatchTPSOriginally,theonlyavailableoptionTransactio

2、nsaccumulatedoverperiodoftimeTimeperiod–day,week,monthTransactionrecordsaccumulatedinfilesWhenbatchesareprocessed,whathappens?UpdatedatabasesGeneratereportsGeneratetransactionsforothersystems2MIS175Spring2002Chapter9MIS221BatchProcessingProsandConsProsRelativelyeasytoprogram,installandmaintainBatch

3、escanbeprocessedduringlow-activityperiodsConsInformationisdelayed3MIS175Spring2002Chapter9MIS221OnlineTPS(OLTP)TransactionsareprocessedinrealtimeRequiredforany“modern”applicationwheretimeiscriticalWellsupportedbyclient/servercomputingmodel4MIS175Spring2002Chapter9MIS221HybridTPSOLTPapplicationscanf

4、eedtransactionstobatchsystemsExamine:GLonlyupdatedonceperdayRealtimeordercapturewithdelayedprocessing5MIS175Spring2002Chapter9MIS221TPSRequirementsCapture,processandstoretransactionsProducereportsandinformationabouttransactionsProducetransactionsforotherTPSBeaccurateandtimelyBeefficient–requireless

5、laborIncreasecustomerserviceIncreasecompetitiveadvantage6MIS175Spring2002Chapter9MIS221TPSActivityModelDatacaptureFromonlineentryor“external”systemDatavalidationShouldbedoneasclosetosourceaspossibleProcessingDatamanipulationDatabaseupdatingGenerationoftransactionsforothersystemsArchiveTransactionCr

6、eatedocumentsandreports7MIS175Spring2002Chapter9MIS221ManagementIssuesUptimeHowlongcanthesystembe“down”beforesignificantcostsareincurred?ProcessingDelays/ResponseTimesHowquicklymustatransactionbeprocessed?Whatistheworstonlineresponsetimethatisacceptable8MIS175Spring2002Chapter9MIS221ManagementIssue

7、s(2)DisasterRecoveryWhatplansareinplacetorecoverlostbusinessdata?Whatplansareinplacetoresumebusinessprocessingincaseofdisaster?AuditCanyouverifytheintegrityofthesystem?Howwillyouknowiftransactionsarenotproc