Biological pathway data is the key resource for biologists worldwide. Interestingly, most of these sources that generate, update, and analyze data are open source. One of the observations that motivated this research work is that, the repositories of data created by a variety of laboratories and research units worldwide represent same pathways with significant details. Generally, if the pathway data has resulted from experimentation, then it is expected that across different resources, under similar conditions, pathways would be exactly identical and biologists may pickup from any source. Interestingly, almost all of the biological data sources refer to data integration of some kind. It may involve rigorous integration mechanisms within the data source and the purpose of integration may change the perspective of looking at the integration.