System.Data.Metadata.Edm Namespace

Contains a set of types that represent concepts throughout the models used by the Entity Framework and a set of classes that help applications to work with metadata.

Classes

AssociationEndMember	Represents the End of an association in the conceptual model.
AssociationSet	Represents an association set in the conceptual model.
AssociationSetEnd	Represents the End of the association set in a conceptual model.
AssociationType	Represents an association in a conceptual model.
CollectionType	Represents a collection of instances of a specific type. You cannot explicitly define a CollectionType in a conceptual model.
ComplexType	Represents a complex type in a conceptual model.
Documentation	Represents the documentation associated with a conceptual model construct.
EdmError	Encapsulates the error information for a generic conceptual model error.
EdmFunction	Represents information about the functions that may be invoked from the queries written by the Entity SQL query language. These may be the built-in functions exposed by the storage provider or user-defined functions in a particular database.
EdmItemCollection	Loads metadata about the conceptual model. The EdmItemCollection loads metadata from conceptual schema definition language (CSDL) files. This class is derived from the ItemCollection class.
EdmMember	Represents a member that can be declared in any StructuralType.
EdmProperty	Represents a property for the EntityType in a conceptual model. An EdmProperty class derives from the EdmMember class and provides the DefaultValue and the Nullable facets for the type of this EdmProperty.
EdmSchemaError	Encapsulates the detailed information about a conceptual model schema error.
EdmType	Represents a base class for all the types in a conceptual model.
EntityContainer	Represents an entity container in a conceptual model. An EntityContainer is a logical grouping of entity sets and association sets.
EntitySet	Represents an entity set in a conceptual model. An EntitySet for an EntityType contains instances of the EntityType or any of its subtypes. More than one EntitySet can be defined by using the same EntityType.
EntitySetBase	A base class for an EntitySet and a RelationshipSet.
EntityType	Represents a particular type of data, such as a customer entity or an order entity in a conceptual model.
EntityTypeBase	A base type for EntityType and RelationshipType.
EnumMember	Represents an enumeration member.
EnumType	Represents an enumeration type.
Facet	Provides additional information about members. In the ADO.NET metadata type hierarchy, facets provide additional information about members through the declared type for the member.
FacetDescription	Specifies a description of the facet.
FunctionParameter	Describes the parameters of an EdmFunction.
GlobalItem	Represents the base item class for all the conceptual model types and entity containers.
ItemCollection	A base class for ObjectItemCollection, EdmItemCollection, and StorageMappingItemCollection classes. An ItemCollection class is an abstract class and provides the core API for loading and holding the in-memory metadata. This class is derived from the ReadOnlyMetadataCollection<T> class.
MetadataItem	Represents the base item class for all the metadata in the ADO.NET metadata type hierarchy.
MetadataProperty	Represents a metadata attribute for an item in the ADO.NET metadata hierarchy.
MetadataWorkspace	Represents the ADO.NET metadata runtime service component that provides support for retrieving metadata from various sources.
NavigationProperty	Represents the navigation from one entity type to another entity type in the conceptual model .
ObjectItemCollection	Class for representing a collection of items for the object layer. Most of the implementation for actual maintenance of the collection is done by ItemCollection.
PrimitiveType	Describes the .NET primitive types, conceptual model primitive types, and storage provider-specific primitive types.
ReadOnlyMetadataCollection<T>	Represents a collection of members in the ADO.NET metadata hierarchy by providing a read-only collection with advanced lookup capabilities. This class is derived from the ReadOnlyCollection<T> class.
ReferentialConstraint	Describes the referential constraints on the relationships in a conceptual model.
RefType	Provides the address of an entity for operations that use the entity. You cannot define a RefType in a conceptual model schema explicitly.
RelationshipEndMember	Defines the End member for the RelationshipType.
RelationshipSet	Represents a relationship set in a conceptual model.
RelationshipType	Represents the base class for relationships in a conceptual model.
RowType	Describes a row, such as the result of a query. This class is derived from the StructuralType class. The structure of the row type depends on what database columns are projected in the query. The RowType can be useful in conceptual-model functions.
SimpleType	A base class that describes primitive types in a conceptual model.
StoreItemCollection	Loads metadata about the storage (database) model. The StoreItemCollection loads metadata from store schema definition language (SSDL) files. This class is derived from the ItemCollection class.
StructuralType	A base type for all the types in a conceptual model that have members.
TypeUsage	Describes a type and a set of facets for that type.

Structs

ReadOnlyMetadataCollection<T>.Enumerator

Supports a simple iteration over the ReadOnlyMetadataCollection<T> collection.

Enums

BuiltInTypeKind	Represents an enumeration that specifies the list of all built-in types in a conceptual model.
CollectionKind	Represents an enumeration that specifies the kind of the collection that is applied to the properties in the conceptual schema definition language (CSDL) files. You can apply this to the properties of any type.
ConcurrencyMode	Specifies the concurrency options for the properties in a conceptual model.
DataSpace	Specifies the default names for the models in the Entity Framework.
EdmSchemaErrorSeverity	Specifies the severity level of the error.
OperationAction	Specifies the list of possible actions when the parent End of the RelationshipType is deleted.
ParameterMode	Specifies the direction of a parameter.
ParameterTypeSemantics	Specifies the type semantics that are used to resolve the function overloads. Each store provider must use these enumeration flags in the provider manifest file for every function definition.
PrimitiveTypeKind	Specifies the primitive types as defined by EDM.
PropertyKind	Specifies the kinds of item attributes in the conceptual model.
RelationshipMultiplicity	Represents the multiplicity information about the End of a relationship type.
StoreGeneratedPattern	Represents an enumeration that specifies three options indicating whether the column in the store schema definition language (SSDL) (.ssdl) needs a value during insert and update operations. ADO.NET reads the value of the column and then stores it in-memory cache.

Remarks

For more information about how to use this namespace, see ADO.NET Metadata.