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POoffline application client-server
 

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    <p>i want develop a desktop application for a <strong>customer</strong> (factory) that store <strong>personal information of personnel</strong>. in this application we define level for application users. i mean one user is top level (parent) that can see all personnel data stored and second level (first child) can see its data and its childs data and etc . exact like tree view and each node can see its data and child data. that means parent factory has some childs factory and childs have childs.</p> <p>in online application you can handle this so easy but this one is offline . now they enter their personnel information in their application (each user has different PC).</p> <p><strong>now you know the big problem is merging childs DBs to their parent DB</strong>.Ch3 And Ch4 Send Their DBs to Ch1 And same for Ch5,Ch2 Then Ch1 And Ch2 to Parent.we have conflict in merging for example one person from ch1 went to ch3 the data duplicate or if when parent have all data one child change one person national code (unique key) then in merging we cannot update existing then conflict in merging and lots of problem you know .</p> <p><strong>Any Idea for Merging DB s!?</strong></p> <p><img src="https://i.stack.imgur.com/hfji0.png" alt="enter image description here"></p> <hr> <p>abit about my Data Base . personnelInformation is main table that has a related table with name PersonnelFactory that each row has one person factory and enter date and exit date and personnel code. a table for person rank (job) in that factory . this is small part of DB for you understand problems.</p>
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    1. USMamad R
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    1. COSound like the only problem is that you don't have a merging strategy? How do you want to handle duplicates? I'd use GUIDs as keys to avoid dupes on keys.
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    2. COseems you said true but in big db with a lot related table duplicate , Updated and Deleted rows are problem and relation make things complex . the question is : is there any way DLL , program etc to help me or i must do it my self with C# code. and i read syncframework seems it cant help me.
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