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  • Is a java class with only 50 lines and a email client application both a program can only have one process? Commented Jul 25, 2016 at 21:28
  • The notion of process offers a boundary of protection, so two programs would not typically share one process even if they are small, if I understand your question. Commented Jul 25, 2016 at 21:32
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    You would usually call Chrome one program, but each tab has its own process. Commented Jul 25, 2016 at 21:57
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    Large databases (DBMS) may have replicated (multiple) procceses of the same executable for performance , as well as a collection of utility programs. Multi-tier architecures also usually have multiple programs and processes. Commented Jan 16, 2022 at 18:18
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    @GRANZER, See en.m.wikipedia.org/wiki/Multitier_architecture Commented Jan 16, 2022 at 18:25