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foreign key
noun
A column (or group of columns) in a relational table that identifies another table, so that items in the two tables can be conceptually linked.
Exact(60)
PK = Primary Key, FK = Foreign Key.
Additionally, both tables also store the metric used by the statistics or graphics (foreign key metric_type_id), the type of metadata assessed by the metric (foreign key metadata_type_id), and the date of computation (foreign key date_id).
It stores the type of metadata that is assessed (foreign key metadata_type_id), when the metric is calculated (foreign key date_id), the web page which the metadata are associated to (foreign key page_id), and the value of the metric.
The COMPOUND_ID is a foreign key that refers into the COMPOUNDS table.
Object relationships in UML models are implemented as primary key and foreign key in database.
The attributes of the foreign key list are not necessarily considered as primary keys.
This way, the existence of a record in an attribute classified as foreign key depends on the existence of the related record on the other set, in which the primary key is equal to that foreign key.
The junction creates a table containing the data from Patient and Hospitalization tables through the existing foreign key relationship.
The table Statistics stores the type of statistical indicator (foreign key statistic_type_id) and the value for the statistic.
The table Graphics stores the type of graphical representation (foreign key graphic_type_id) and the file name for the graphic.
In the case where a foreign key is considered as a primary key, it must belong to both lists.
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