PolarDB — infrastructure for specialized NoSQL datebases and DBMS

The report presents a new system focused on the creation of specialized databases and database management systems. Based on the analysis of various NoSQL solutions there have been formulated some principles of such a system. The main features of the approach are: a) the infrastructure provides a flexible system of type definitions which allow to create data structures based on different paradigms; b) different forms of structured data support and mapping to the file system are used in the infrastructure. Experiments were provided with the implementation of RDF graphs, relational tables, name tables, object-relational mappings. The approach allows to solve some problems of technologies creation for work with Big Data.