dxEMF.Attributes Unit

Classes

Name	Description
AggregatedAttribute	Indicates if an entity class‘s collection field/property referencing an association‘s “many” end aggregates its referenced entity objects.
AssociationAttribute	Identifies the end of an association that establishes a one-to-many entity relationship.
AutomappingAttribute	Enables simplified table and column mapping for an entity class.
BlobAttribute	Indicates if a table column to which a string or BLOB data field/property of an entity class is mapped stores Memo or BLOB data.
ColumnAttribute	Specifies a table column to which an entity class maps its field/property.
DBTypeAttribute	Specifies the data store type of a table column to which an entity class‘s field/property maps its data.
DiscriminatorAttribute	Specifies a discriminator column value that uniquely identifies rows that correspond to an entity class in the ancestor’s table.
DiscriminatorColumnAttribute
EditFormatAttribute
EditMaskAttribute
EntityAttribute	Marks a class as an entity class.
GeneratorAttribute	Specifies how an auto-incremented primary key generates its values.
IndexedAttribute	Specifies if a field’s/property’s mapped column makes up a non-unique index on a data store table to which an entity class is mapped.
IndexesAttribute	Specifies one or more columns that make up a non-unique index on a data store table to which an entity class is mapped.
InheritanceAttribute	Specifies where an entity descendant class stores its data.
KeyAttribute	Specifies one or more table columns that make up a primary key for an entity class.
NoForeignKeyAttribute	Disables automatic creation of foreign key constraints for an association.
NonPersistentAttribute	Excludes a field from a schema created for an entity class marked with the AutomappingAttribute.
NullableAttribute	Allows a table column mapped to an entity class‘s field/property storing NULL values.
ReadOnlyAttribute	Makes a TdxEMFDataSet component’s field bound to an entity class’s field/property read-only.
SchemaNameAttribute	Specifies the name of a database schema in which a table mapped to an entity class is created.
SizeAttribute	Specifies the size of a table column to which a string or BLOB data field/property of an entity class is mapped.
TableAttribute	Specifies a data store table to which an entity class maps its data.
UniqueAttribute	Creates a unique index on a table column that is mapped to an entity class‘s field/property.
VirtualColumnAttribute

Types

Name	Description
DefaultAttribute	Reserved for future use.