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difference between value object,tranfer object

 
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can any body expain for what purpose we are using value object,tranfer object ?in which tier we will use these patterns.what is the difference between them
 
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HI we use term value object when we talk in core java .but we use term transfer object when we talk about j2EE.both have same purpose to carry data.
 
rajareddy annavaarm
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i understand a litlle bit.can you elaborate it please
 
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For example, if you want to get the data from the remote objects and if you make frquent calls for getting data from the remote object, it will result in network traffic and performance hit. To avoid this, usually we will make a single call to remote object to get all the data. Now you can get the data from your object (transferred data from remote object to your local object). But the data will be stale at your object.Once again it is design issue you have to deal with, how frequent your data will be changing at the remote.
 
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