DevExpress.DataAccess.DataFederation Namespace
In This Article
Contains classes that support federated queries and the Federation data source.
Assembly: DevExpress.DataAccess.v24.2.dll
NuGet Package: DevExpress.DataAccess
#Classes
Name | Description |
---|---|
Federation |
A federated data source that integrates different data sources and provides uniform data access with a federated query. |
Federation |
A base class for the classes that implement federated data sources. |
Federation |
Identifies the master-detail relationship defined by federated queries. |
Federation |
Describes the relation and contains key column names and a relation condition operator. |
Join |
Defines the JOIN clause. |
Join |
Contains Join |
Master |
A collection of the Federation |
Query |
Provides extension methods to build a federated query with Fluent API. |
Query |
A base class for SQL query that retrieves data from one or more sources. |
Query |
A collection of federated queries (Query |
Select |
|
Select |
|
Select |
Defines a column in the SELECT statement by the name, alias and source. |
Select |
|
Select |
A collection of ISelect |
Select |
A node that provides data with a SELECT query. |
Select |
Provides a Fluent interface method used to build a federated query. |
Source | A data source that is part of the federated data source. |
Source |
A base class that is a node used to create a federated data source. |
Transformation |
A node that provides data with a Transformation query. |
Transformation |
Contains methods that allow you to create transformation-based queries to sources of the Federation Data Source. |
Transformation |
Contains rules that specify how the transformation works. |
Transformation |
A collection of the Transformation |
Union |
A node that provides data with a Union and Union |
Union |
Provides a Fluent interface method to build a union query. |
#Interfaces
Name | Description |
---|---|
IAliased |
Defines a node that has a name and an alias. |
IAliased |
|
IJoin |
Defines a node that can take part in JOIN statements. |
INode |
|
IQuery |
|
ISelect |
Defines a node that can contain a SELECT expression. |
#Structs
Name | Description |
---|---|
Select |
Defines the column and its alias in the SELECT expression. |
#Enums
Name | Description |
---|---|
Federation |
Specifies the relation’s condition. |
Join |
Lists join types. |
Union |
Lists values that specify the result set of the query that combines result sets of two or more queries. |