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I am currently working on an application with Eclipse RCP4. But that is not the main information but just keep it in mind as background information.

I was told that my question did not quite correspond to the standard of this forum so I would like to adapt it herewith.

What is the best way to manage object creation in a multiple user application in Java? Please keep in mind that every object that should be created needs an absolute unique id inside the database.

What the application architecture looks like:

Structure

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handyerror
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    Welcome to Stack Overflow! To give you a great answer, it might help us if you have a glance at [ask] if you haven't already. It might be also useful if you could provide a [mcve]. – Mat Dec 18 '17 at 10:14
  • Edited my question. My thought is that it is better to split up the question in multiple parts. Thanks for the advice. – handyerror Dec 18 '17 at 10:51
  • Please mention application type? I believe you're talking about web application. If web application then each thread will be managed by Container. Database integration behavior depends on your design. – Ars Dec 18 '17 at 10:55
  • JPA, say with eclipseLink: O/R mapping java / database. – Joop Eggen Dec 18 '17 at 10:57
  • Possible duplicate of [ID Best Practices for Databases](https://stackoverflow.com/questions/4350369/id-best-practices-for-databases) – tkruse Dec 18 '17 at 13:14
  • If you need to use postgres as a DB you should say so in the title and tags, and read questions about [Postgres unique Ids](https://stackoverflow.com/questions/787722/postgresql-autoincrement) – tkruse Dec 18 '17 at 13:16

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