The System.Data.Common namespace contains classes shared by the .NET Framework data providers.
A .NET Framework data provider describes a collection of classes used to access a data source, such as a database, in the managed space. Supported providers include the .NET Framework Data Provider for ODBC, the .NET Framework Data Provider for OLEDB, the .NET Framework Data Provider for Oracle, and the .NET Framework Data Provider for SQL Server. The classes in System.Data.Common are intended to give developers a way to write ADO.NET code that will work against all .NET Framework data providers.
For conceptual information about how to use this namespace when programming with the.NET Framework, see Writing Provider Independent Code with ADO.NET.
Type | Reason |
---|---|
CatalogLocation |
Indicates the position of the catalog name in a qualified table name in a text command. |
DataAdapter |
Represents a set of SQL commands and a database connection that are used to fill the System.Data.DataSet and update the data source. |
DataColumnMapping |
Contains a generic column mapping for an object that inherits from System.Data.Common.DataAdapter. This class cannot be inherited. |
DataColumnMappingCollection |
Contains a collection of System.Data.Common.DataColumnMapping objects. |
DataTableMapping |
Contains a description of a mapped relationship between a source table and a System.Data.DataTable. This class is used by a System.Data.Common.DataAdapter when populating a System.Data.DataSet. |
DataTableMappingCollection |
A collection of System.Data.Common.DataTableMapping objects. This class cannot be inherited. |
DbCommand |
Represents an SQL statement or stored procedure to execute against a data source. Provides a base class for database-specific classes that represent commands. erload:System.Data.Common.DbCommand.ExecuteNonQueryAsync |
DbCommandBuilder |
Automatically generates single-table commands used to reconcile changes made to a System.Data.DataSet with the associated database. This is an abstract class that can only be inherited. |
DbConnection |
Represents a connection to a database. |
DbConnectionStringBuilder |
Provides a base class for strongly typed connection string builders. |
DbDataAdapter |
Aids implementation of the System.Data.IDbDataAdapter interface. Inheritors of System.Data.Common.DbDataAdapter implement a set of functions to provide strong typing, but inherit most of the functionality needed to fully implement a DataAdapter. |
DBDataPermission |
Enables a .NET Framework data provider to help ensure that a user has a security level adequate for accessing data. |
DBDataPermissionAttribute |
Associates a security action with a custom security attribute. |
DbDataReader |
Reads a forward-only stream of rows from a data source. |
DbDataRecord |
Implements System.Data.IDataRecord and System.ComponentModel.ICustomTypeDescriptor, and provides data binding support for System.Data.Common.DbEnumerator. |
DbDataSourceEnumerator |
Provides a mechanism for enumerating all available instances of database servers within the local network. |
DbEnumerator |
Exposes the IEnumerable.GetEnumerator method, which supports a simple iteration over a collection by a .NET Framework data provider. |
DbException |
The base class for all exceptions thrown on behalf of the data source. |
DbMetaDataCollectionNames |
Provides a list of constants for the well-known MetaDataCollections: DataSourceInformation, DataTypes, MetaDataCollections, ReservedWords, and Restrictions. |
DbMetaDataColumnNames |
Provides static values that are used for the column names in the MetaDataCollection objects contained in the System.Data.DataTable. The System.Data.DataTable is created by the GetSchema method. |
DbParameter |
Represents a parameter to a System.Data.Common.DbCommand and optionally, its mapping to a System.Data.DataSet column. For more information on parameters, see Configuring Parameters and Parameter Data Types (ADO.NET). |
DbParameterCollection |
The base class for a collection of parameters relevant to a System.Data.Common.DbCommand. |
DbProviderConfigurationHandler |
This class can be used by any provider to support a provider-specific configuration section. |
DbProviderFactories |
Represents a set of static methods for creating one or more instances of System.Data.Common.DbProviderFactory classes. |
DbProviderFactoriesConfigurationHandler |
This type supports the .NET Framework infrastructure and is not intended to be used directly from your code. |
DbProviderFactory |
Represents a set of methods for creating instances of a provider's implementation of the data source classes. |
DbProviderSpecificTypePropertyAttribute |
Identifies which provider-specific property in the strongly typed parameter classes is to be used when setting a provider-specific type. |
DbTransaction |
The base class for a transaction. |
GroupByBehavior |
Specifies the relationship between the columns in a GROUP BY clause and the non-aggregated columns in the select-list of a SELECT statement. |
IdentifierCase |
Specifies how identifiers are treated by the data source when searching the system catalog. |
RowUpdatedEventArgs |
Provides data for the RowUpdated event of a .NET Framework data provider. |
RowUpdatingEventArgs |
Provides the data for the RowUpdating event of a .NET Framework data provider. |
SchemaTableColumn |
Describes the column metadata of the schema for a database table. |
SchemaTableOptionalColumn |
Describes optional column metadata of the schema for a database table. |
SupportedJoinOperators |
Specifies what types of Transact-SQL join statements are supported by the data source. |