Big data is the new technology for healthcare management system. Present day’s big data analytics are using in everywhere because of its good data management and its large storage capacity. In hospital managements the patients and doctors record keeping safe is the important role in healthcare system. In worldwide the big data method is extended use in the area of medicine and healthcare system. In this sector so many problems are there in implementing big data in healthcare system especially in relation to securities, privacy matters, standard records, good governance, managing of data, data storing and maintenance, etc. It is critical that these challenges to overcome before big data can be implemented successfully in healthcare. The amount of data being digitally collected and stored safely in big data Hadoop clusters. This paper introduces healthcare data, big data in healthcare systems, applications, advantages, issues of Big Data analytics in healthcare sector.
                                
                                
                                    
                                    Big Data analytics, Healthcare, Personalized medicine, health promotion, Hadoop cluster
                                
                                
                                
                                
                                    
                                        
                                        
                                        
                                        
                                            
                                                
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