Welcome to this course on Big data . Big Data, is not just about, storing and extracting data, but much more than that. Big Data, itself comprises of so many technologies that it is difficult to recall which one to start learning with. Some of the technologies big data consists of is Hadoop, MapReduce, Apache, Pig, Hive, Flume, Sqoop, Zookeeper, Oozie, Spark.In this course we will be learning what is big data and how to use the various technologies of Big data.