NoSQL

In the domain of software architecture, Event Sourcing (ES) has emerged as a significant paradigm, especially for systems requiring high levels of auditability, traceability, and intricate state management. Systems such as financial transaction platforms, inventory management systems, customer relationship management (CRM) software, and any application requiring a detailed audit trail can significantly benefit from this approach. Numerous aspects of ES remain unexplored, as they have yet to be thoroughly investigated by scientific research.

The problem that led to a Big database has been described in the article. The NoSQL databases features and categories are outlined. Big data model "entity-characterization" is introduced. This model allows to determin the distance between the source data on the availability of information about a particular entity.