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A view is a non-materialized set of rows, defined by the associated query.
Superclasses
NamedColumnSet
Contained Elements
QueryExpression
Attributes
isReadOnly
Indicates whether the underlying tables can be updated through an update to this View.type:multiplicity: |
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| Boolean | |||||
| exactly one |
queryExpression
The query associated with the View. The query result must match the set of Columns associated with the View (in parent class ColumnSet).type:multiplicity: |
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| QueryExpression | |||||
| exactly one |
checkOption
This field is meaningful only if the view is not ReadOnly. CheckOption indicates that the RDBMS will validate that changes made to the data verify the view filtering condition and belong to the view result set.type:multiplicity:constraints: |
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| Boolean | |||||
| exactly one | |||||
| only used when isReadOnly=false |
Constraints
checkOption is valid only if isReadOnly is False. [C-2]