The disclosure relates to method and system for performing real-time data validation. The method includes fetching a plurality of metadata from a set of external data sources and a set of external file storage systems. The plurality of metadata is fetched along with a set of connection configuration parameters and column mapping information The method further includes generating a set of clusters for performing data validation in an external processing infrastructure based on an analysis of the plurality of metadata and of the external processing infrastructure. The method further includes determining a set of test scripts from a plurality of test scripts based on the column mapping information and the set of connection configuration parameters. The method further includes performing a real-time data validation by executing the set of test scripts in the set of clusters.