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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:
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]
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 ...
An organizational chart, also called organigram, organogram, or organizational breakdown structure (OBS), is a diagram that shows the structure of an organization and the relationships and relative ranks of its parts and positions/jobs. The term is also used for similar diagrams, for example ones showing the different elements of a field of ...
Relationships provide social support that allows us to engage fewer resources to regulate our emotions, especially when we must cope with stressful situations. Social relationships have short-term and long-term effects on health, both mental and physical. In a lifespan perspective, recent research suggests that early life experiences still have ...
Rather, relational ethics is seen as (1) having some objective ontological and experiential basis by virtue of being derived from basic needs and from real relationships that have concrete consequences (i.e., as distinct from abstract or "value" ethics [3]); and (2) as being significant explanatory and motivational dynamics operating - in both ...
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A data type in a relational database might be the set of integers, the set of character strings, the set of dates, etc. The relational model does not dictate what types are to be supported. Attributes are commonly represented as columns, tuples as rows, and relations as tables. A table is specified as a list of column definitions, each of which ...