Cardinality (data modeling)
The cardinality of a join between two tables is the numerical relationship between rows of one table and rows in the other. Common cardinalities include one-to-one, one-to-many, and many-to-many. 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 encounter table with an entry for each hospital visit.
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Cardinality (computer engineering)Cardinality (disambiguation)Data modelData structure diagramEntity–relationship modelForeign keyGellishJakarta PersistenceMany-to-many (data model)One-to-manyOne-to-many (data model)One-to-one (data model)Portable Database ImageSuperkeyTerminusDBUnified Modeling Language
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Cardinality (data modeling)
The cardinality of a join between two tables is the numerical relationship between rows of one table and rows in the other. Common cardinalities include one-to-one, one-to-many, and many-to-many. 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 encounter table with an entry for each hospital visit.
has abstract
Kardinalitäten sind Mengenanga ...... Datenbanken zu unterscheiden.
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La cardinalité ou multiplicité ...... les Objets issus de ces Types.
@fr
The cardinality of a join betw ...... y a modern software developer.
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在数据建模方面，一张数据表相对于另一数据表的基数乃是数据库设计之中至关重要的一个方面。就解释不同数据表之间如何相互联系而言，基数的定义是确定数据表之间关系的重要事项之一。
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962,158,670
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October 2019
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No definition in the intro.
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Kardinalitäten sind Mengenanga ...... können n MITARBEITER arbeiten
@de
La cardinalité ou multiplicité ...... les Objets issus de ces Types.
@fr
The cardinality of a join betw ...... entry for each hospital visit.
@en
在数据建模方面，一张数据表相对于另一数据表的基数乃是数据库设计之中至关重要的一个方面。就解释不同数据表之间如何相互联系而言，基数的定义是确定数据表之间关系的重要事项之一。
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label
Cardinality (data modeling)
@en
Cardinalité (programmation)
@fr
Kardinalität (Datenbankmodellierung)
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基数 (数据建模)
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