Class DistinctUserDefinedType {Analysis} derived from: UserDefinedType
Documentation
4.7 User-defined types
A user-defined type is a schema object, identified by a <user-defined type name> . The definition of a userdefined type specifies a number of components, including in particular a list of attribute definitions. Although the attribute definitions are said to define the representation of the user-defined type, in fact they implicitly define certain functions (observers and mutators) that are part of the interface of the user-defined type; physical representations of user-defined type values are implementation-dependent.
The representation of a user-defined type is expressed either as a single data type (some predefined data type, called the source type), in which case the user-defined type is said to be a distinct type, or as a list of attribute definitions, in which case it is said to be a structured type.
A user-defined type is described by a user-defined type descriptor. A user-defined type descriptor contains:
- The name of the user-defined type (<user-defined type name> ). This is the type designator of that type, used in type precedence lists (see Subclause 9.5, “Type precedence list determination”).
- An indication of whether the user-defined type is a structured type or a distinct type.
Parent Package | DataTypes | Abstract | No |
Export Control | PublicAccess | Link Class for | None |
Class Kind | NormalClass | Cardinality | n |
Space | | Concurrency | Sequential |
Persistence | No | | |
Operations
Attributes
Associations
Generalization Relationships
Property Settings
Data Modeler
dmItem | False | DMName | |
IsTable | False | IsView | False |
IsDomain | False | IsSPPackage | False |
Synonymns | | TableSpaceID | |
SourceId | | SourceType | |
CorrelationName | | SelectClause | |
IsUpdateable | True | CheckOption | None |
IsSnapShot | False | IsDistinct | False |
PersistToServer | | IsPackage | False |