  The article deals with the problem which led to Big Data. Big Data
information technology is the set of methods and means of processing different
types of structured and unstructured dynamic large amounts of data for their
analysis and use of decision support. Features of NoSQL databases and
categories are described. The developed Big Data Model "Entity and Features"
allows determining the distance between the sources of data on the availability
of information about a particular entity. The information structure of Big Data
has been devised. It became a basis for further research and for concentrating
on a problem of development of diverse data without their preliminary
integration.
