Hello,
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No, yenepoya University is not affiliated to UGC.
The college is just approval of UGC.
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And the difference you will find between approval and UGC is,
Affiliated means the institute is officially involved with the  affiliated official organisation. In simple, it means wherever you study the final certificate will be from main organisation.
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Approval means the organisation Just got an approval to run certain Institute to course, which inversely increase the value of the certificate.
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Hope you are cleared with this.
Thank you