relacyjnego

Relacyjnego is the genitive singular form of the Polish adjective relacyjny, meaning relational. The term is widely used in Polish-language technical literature to describe properties, models, or structures that concern the relations between entities or data items. In everyday professional usage, relacyjnego appears in phrases such as model relacyjny, baza danych relacyjna, warunki relacyjne, and schemat relacyjny.

In mathematics and logic, relational theory studies relations, which are sets of ordered pairs that define a relationship between elements of two domains. Relational algebra and relational calculus underpin operations that combine and query data. These concepts form the theoretical basis for how information about entities and their connections is represented and manipulated.

In computer science, the relational model, introduced by E. F. Codd in 1970, organizes data into relations (tables) with columns (attributes) and rows (tuples). SQL, the standard query language, implements relational algebra operations such as selection, projection, join, and set operations. Core concepts include primary keys, foreign keys, and normalization forms (1NF, 2NF, 3NF) to reduce redundancy and maintain data integrity.

The term relacyjnego thus encodes the idea of relationships and their formal treatment across disciplines, especially in databases and mathematical logic, where data are interpreted as a network of interrelated facts rather than as isolated records. See also relational database, relational algebra, and E. F. Codd.