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Short note: Heterogeneity in DS

Short answer

Heterogeneity means differences in networks, hardware, operating systems, programming languages, and implementations. It is handled by middleware providing a uniform model, IDL and marshalling to common formats, mobile code, and standard protocols like TCP/IP and HTTP.

Write a short note on heterogeneity in distributed system.

Heterogeneity means variety and difference among the components of a distributed system. It applies to:

  • Networks: Ethernet, Wi-Fi, mobile; the Internet protocols hide the differences.
  • Computer hardware: different data representation (byte order, integer size).
  • Operating systems: Windows, Linux, Android with different APIs for the same protocol.
  • Programming languages: different representation of characters, arrays and structures.
  • Implementations by different developers: they must follow common standards.

Handling heterogeneity: middleware (CORBA, Java RMI, web services) provides a uniform programming model and hides differences with an IDL and marshalling to a common format (CDR, XDR). Mobile code (Java applets, virtual machines, bytecode) runs the same code on any machine. Common protocols (TCP/IP, HTTP) and standards give interoperability.

Example: a Windows client in C# calls a Linux server written in Java through SOAP or REST web services.

✓ Answer checked by Claude Opus 5.5 (high effort)

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