Even ORM has its own limitations.  Let us understand them.

·         Lack of standards – We have variety of ORM packages available in the market.  We do not have common standard or conventions followed.  Lack of such standard has made the programmers job tough.  An ORM package may be completely different from another one.

·         Performance related issues - Most of ORM related packages use reflection.  As we know, using   Reflection excessively is a performance overhead.  (But there are some ORM packages which do not use the same.)