BO(Bussiness Object),PO(Persistent Object),VO(Value Object)

06-08-01 power1128
快被弄昏了，他们有些什么关系，又应该位于系统的那些层次上面
#业务对象     

stormj
2006-08-01 14:55
VO; the Object contain or encapsulation DATA(values) and might be transfered between ties

BO: create the Transfer Object and returning it to the client upon request.

PO: is responsible for the OJBECT's persistent(into DB,XML,files .....)

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