调研流程图符号及其画法

业务流程图基本符号注：椭圆符号用“方框”替代同步符号判断符号1/11业务流程图实例顾客或者部门处理流程2/11业务流程图实例3/11数据流图基本符号处理过程数据流来源/目地文献或者数据库4/11数据流图基本要素5/11Source–源Trigger–dataflowfromanexternalagenttoaprocess(输入)Activity–处理过程Response–adataflowfromaprocesstoanexternalagent(输出)Destination–目标地Entity（数据实体）–数据文献或者数据库表实体6/11合理数据流必须通过“处理过程”ProcessProcessProcessDataStoreSource(externalagent)ProcessProcessDestination(externalagent)7/11数据流图实例8/11“处理流程”描述9/11数据流数据属性构造定义DATASTRUCTUREORDER= ORDERNUMBER+ ORDERDATE+ [PERSONALCUSTOMERNUMBER, CORPORATEACCOUNTNUMBER]+ SHIPPINGADDRESS=ADDRESS+ (BILLINGADDRESS=ADDRESS)+ 1{PRODUCTNUMBER+ PRODUCTDESCRIPTION+ QUANTITYORDERED+ PRODUCTPRICE+ PRODUCTPRICESOURCE+ EXTENDEDPRICE}N+ SUMOFEXTENDEDPRICES+ PREPAIDAMOUNT+ (CREDITCARDNUMBER+EXPIRATIONDATE) (QUOTENUMBER)ADDRESS= (POSTOFFICEBOXNUMBER)+ STREETADDRESS+ CITY+ [STATE,MUNICIPALITY]+ (COUNTRY)+ POSTALCODEENGLISHINTERPRETATIONAninstanceofORDERconsistsof: ORDERNUMBERand ORDERDATEand EitherPERSONALCUSTOMERNUMBER orCORPORATEACCOUNTNUMBER andSHIPPINGADDRESS(whichisequivalent toADDRESS) andoptionally:BILLINGADDRESS(whichis equivalenttoADDRESS) andoneormoreinstancesof: PRODUCTNUMBERand PRODUCTDESCRIPTIONand QUANTITYORDEREDand PRODUCTPRICEand PRODUCTPRICESOURCEand EXTENDEDPRICE andSUMOFEXTENDEDPRICESand PREPAIDAMOUNTand optionally:bothCREDITCARDNUMBERand EXPIRATIONDATEAninstanceofADDRESSconsistsof: optionally:POSTOFFICEBOXNUMBERand STREETADDRESSand CITYand EitherSTATEorMUNICIPALITY andoptionally:COUNTRY andPOSTALCODE10/11数据流