Basic notation for supertype/subtype relationships - ppt video online download
We recently reported that two of six HLA-DP supertypes (DP, 6, 8) were associated with susceptibility (DP2) and resistance (DP1) to. The ______ rule specifies that each entity instance of the supertype must be a member of some subtype in the relationship. diagram depicts the supertype/subtype relationships to the PHCDM core classes. Examples include an organization that provides physical therapy services.
Thank You for evaluating work. I appreciate your honest criticism of the work. Here are the answers to your questions: Relationship between Persons to PatientHistory.
Am I interpreting Database Cardinality and Optionality relationships correctly?
A person can be a therapist or a patient. If the Person is a patient, then he or she must be listed in the PatientHistory Table.
Since more than one person can be a patient, more than one person can be listed in the PatientHistory table. PatientHistory must contain a Person. It must contain a person who is a patient.Mending Your Relationship with Star Wars - CH Shorts
It means that this field in the PatientHistory table cannot be left empty. That's why I have Patient History can have multiple persons meaning that you can have more than one person who is a patient at the clinic. If all the people listed in the Person's table are Patients, then all of them will have a record in the PatientHistory table.
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Why I used Surrogate keys? PatientHistory records a patient's diagnosis, who is treating the patient, and the date the case was assigned to the therapist.
A patient can be treated for more than one condition at different times and through a different therapist. The Patient gets recorded in the PatientHistory table.
The patient's record is number This is the HistoryID for this Diagnosis. Condition and diagnosis are the same thing. However, the term vocabulary is more appropriate for such a list.
Basic notation for supertype/subtype relationships
In current usage within " Knowledge Management ", taxonomies are seen as less broad than ontologies as ontologies apply a larger variety of relation types. Mathematically, a hierarchical taxonomy is a tree structure of classifications for a given set of objects.
It is also named Containment hierarchy. At the top of this structure is a single classification, the root node, that applies to all objects. Nodes below this root are more specific classifications that apply to subsets of the total set of classified objects. So for instance, in common schemes of scientific classification of organisms, the root is called " Organism " followed by nodes for the taxonomic ranks: Domainkingdomphylumclassetc.
Taxonomy and mental classification Edit Anthropologists have observed that taxonomies are generally embedded in local cultural and social systems, and serve various social functions.
A more recent treatment of folk taxonomies including the results of several decades of empirical research and the discussion of their relation to the scientific taxonomy can be found in Scott Atran's Cognitive Foundations of Natural History.