What is Big Data ?
Big Data is large collection of data. The Big Data collect and analyze the huge amounts of data we are now generating in the world e.g. your detail or any kind of detail from social media, bio-metric systems data, server data , data curation, storage, transfer, visualization, querying, updating, search, sharing, elections data and much more. Overall it means that traditional data processing applications are inadequate.
Velocity refers to the data is streaming into the server in real time. So, it gives better and useful result, also if the delay is very short. It will also better for Internet of Things (IoT) applications. Because IoT applications have health and safety ramifications that require real-time evaluation and action.
Variety refers to the unstructured data types, means much more than rows and columns such as text documents, email, audio, video, stock ticker data and financial transactions. IT helps people who analyze it to effectively use the resulting insight.