International Journal of Emerging Trends & Technology in Computer Science (IJETTCS)
NoSQL is a technology that is used to store vast databases that are non-relational in nature and supports CRUD (Create, Read, Update and Delete) operations on cloud. Hadoop is a technology that is framed to distribute large amount of work across set of nodes. The common goal of both technologies is to handle \"Vast data\" or \"Big data\". This paper focuses on two major developments that is Map Reduce (Hadoop) and NoSQL technologies on Oracle cloud. Also on the basis of both technologies, study is also carried out about the Hadoop Distributed File System, Hadoop layers, its architecture, Hadoop MR Framework with their examples, characteristics, pros and cons of Hadoop, methodology to handle vast databases on oracle cloud by creating Hadoop clusters and its results.