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The four relational models are as follows: Communal sharing (CS) relationships are the most basic form of relationship where some bounded group of people are conceived as equivalent, undifferentiated and interchangeable such that distinct individual identities are disregarded and commonalities are emphasized, with intimate and kinship relations being prototypical examples of CS relationship. [2]
For example, consider a database of electronic health records. Such a database could contain tables like the following: A doctor table with information about physicians. A patient table for medical subjects undergoing treatment. An appointment table with an entry for each hospital visit. Natural relationships exist between these entities:
Workplace relationships are unique interpersonal relationships with important implications for the individuals in those relationships, and the organizations in which the relationships exist and develop. [1] Workplace relationships directly affect a worker's ability and drive to succeed. These connections are multifaceted, can exist in and out ...
Circle chart of values in the theory of basic human values [1] The theory of basic human values is a theory of cross-cultural psychology and universal values developed by Shalom H. Schwartz. The theory extends previous cross-cultural communication frameworks such as Hofstede's cultural dimensions theory. Schwartz identifies ten basic human ...
Florence Kluckhohn and Fred Strodtbeck suggested alternate answers to all five, developed culture-specific measures of each, and described the value orientation profiles of five southwestern United States cultural groups. Their theory has since been tested in many other cultures, and used to help negotiating ethnic groups understand one another ...
The doctor–patient relationship is a central part of health care and the practice of medicine. A doctor–patient relationship is formed when a doctor attends to a patient's medical needs and is usually through consent. [1] This relationship is built on trust, respect, communication, and a common understanding of both the doctor and patients ...
A tuple is a collection of n values, where n is the relation's degree, and each value in the tuple corresponds to a unique attribute. [6] The number of tuples in this set is the relation's cardinality. [7]: 17–22 Relations are represented by relational variables or relvars, which can be reassigned.
An associative entity is a term used in relational and entity–relationship theory. A relational database requires the implementation of a base relation (or base table) to resolve many-to-many relationships. A base relation representing this kind of entity is called, informally, an associative table. An associative entity (using Chen notation)