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View this topic on docs.devexpress.com (Learn more)

DevExpress.DataAccess.DataFederation Namespace

Contains classes that support federated queries and the Federation data source.

Expanded Classes

  Class Description
Public class FederationDataSource A federated data source that integrates different data sources and provides uniform data access with a federated query.
Public class FederationDataSourceBase A base class for the classes that implement federated data sources.
Public class FederationMasterDetailInfo Identifies the master-detail relationship defined by federated queries.
Public class FederationRelationColumnInfo Describes the relation and contains key column names and a relation condition operator.
Public class JoinElement Defines the JOIN clause.
Public class JoinElementCollection Contains JoinElement (see JoinElement) objects.
Public class MasterDetailInfoCollection
Public class QueryBuildingExtensions Provides extension methods to build a federated query with Fluent API.
Public class QueryNode Base class for SQL query that retrieves data from one or more sources.
Public class QueryNodeCollection A collection of federated queries.
Public class SelectColumnExpression Defines a column in the SELECT statement by the name, alias and source.
Public class SelectExpressionCollection A collection of objects that define columns in the SELECT statement.
Public class SelectNode A node that provides data with a SELECT query.
Public class SelectNodeBuilder Provides a Fluent interface method to build a federated query.
Public class Source A data source that is part of the federated data source.
Public class SourceNode
Public class UnionNode

Expanded Interfaces

  Interface Description
Public interface IAliasedNode Defines a node that has a name and an alias.
Public interface IJoinNode Defines a node that can take part in JOIN statements.
Public interface INodeSelectExpression
Public interface ISelectExpression Defines a node that can contain a SELECT expression.

Expanded Structures

  Structure Description
Public structure SelectStatement Defines the column and its alias in the SELECT expression.

Expanded Enumerations

  Enumeration Description
Public enum FederationConditionType Specifies the relation's condition.
Public enum JoinType Lists JOIN types.
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