Purely descriptive knowledge appears to have a structure that can be formalized using the newly developed tool of dynamic knowledge representation, the event bush. In its framework, a singular biography can be transformed into a knowledge-based system with an opportunity of creation of a database. However, the very approach to the database design may undergo quite a change thereafter. This change may concern the concept of primary key, composition of data scheme, and other fundamental issues of database design.
TopEvent Bush Method
The method of event bush was developed by Pshenichny et al. (2009) to reveal the behavior of information in dynamic environments of directed alternative changes (Pshenichny and Kanzheleva, 2011). It is gaining increasing importance in a variety of fields, from the geosciences to marketing and history (Solomin and Mandrik, 2015). For detailed description of the method, the reader is referred to these publications.
In brief, the event bush represents an environment of directed alternative changes as a set of events of four types: primary internal (ia), primary external (ib), secondary (ii) and tertiary (iii). Event is defined as a statement of general form S – P1, P2, …, Pi, where S is subject, and P1, P2, …, Pi are predicates, with or without negation. The following restrictions are put herewith, (i) subject may be only one in any event, (ii) subject may not be negated, (iii) all predicates may not be negated in an event, at least one must be without negation (e.g., an event S – ~P, ~ being the negation, is not allowed).
The following pairwise relations between event types (i) - (iii) are set in the event bush: