Standardization offer equal power to everyone for any resource irrespective of any criteria. Standardization is highly required in healthcare domain because of the diversity in storing formats of the databases. Every organization follows its own set the local database schema which leads to non-standardized Data mining when applied to non-standardization EHRs might produce useful results, but its benefits are limited to the individual or organization that is performing data mining on their local schema as shown in Fig 1. Whereas data mining when applied to standardized EHRs produces useful results that provide benefits to all individuals or organizations involved. The current study explores some basic limitations on applicability of data mining techniques on non-standardized dataset as compared to standardized dataset. This comparison is summarized in Table III and is explained below.