What is the difference between OVM and UVM

UVM
1

what are the differences between OVM and UVM. why we needed uvm while ovm was there?

2

In reply to 1117ashish:

This has been asked before… see OVM Vs UVM | Verification Academy

OVM was created/supported by Mentor & Cadence
UVM is now an Accellera standard, supported by all the main EDA vendors.

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In reply to graeme_jessiman:

thank u graeme_jessiman.