The **Aspose.Cells.ExternalConnections**  namespace provides classes for external connections to retrieve data from external sources such as Databases and the Web.

### Classes
| Class | Description |
| :- | :- |
| [`ConnectionParameter`](/cells/python-net/aspose.cells.externalconnections/connectionparameter) | Specifies properties about any parameters used with external data connections
<br/>Parameters are valid for ODBC and web queries. |
| [`ConnectionParameterCollection`](/cells/python-net/aspose.cells.externalconnections/connectionparametercollection) | Specifies the [`ConnectionParameter`](/cells/python-net/aspose.cells.externalconnections/connectionparameter) collection |
| [`DBConnection`](/cells/python-net/aspose.cells.externalconnections/dbconnection) | Specifies all properties associated with an ODBC or OLE DB external data connection. |
| [`DataModelConnection`](/cells/python-net/aspose.cells.externalconnections/datamodelconnection) | Specifies a data model connection |
| [`ExternalConnectionCollection`](/cells/python-net/aspose.cells.externalconnections/externalconnectioncollection) | Specifies the ExternalConnection collection |
| [`WebQueryConnection`](/cells/python-net/aspose.cells.externalconnections/webqueryconnection) | Specifies the properties for a web query source. A web query will retrieve data from HTML tables, 
<br/>and can also supply HTTP "Get" parameters to be processed by the web server in generating the HTML by 
<br/>including the parameters and parameter elements. |


### Enumerations
| Enumeration | Description |
| :- | :- |
| [`ConnectionDataSourceType`](/cells/python-net/aspose.cells.externalconnections/connectiondatasourcetype) | Specifies external database source type |
| [`ConnectionParameterType`](/cells/python-net/aspose.cells.externalconnections/connectionparametertype) | Specifies the parameter type of external connection |
| [`CredentialsMethodType`](/cells/python-net/aspose.cells.externalconnections/credentialsmethodtype) | Specifies Credentials method used for server access. |
| [`ExternalConnectionClassType`](/cells/python-net/aspose.cells.externalconnections/externalconnectionclasstype) | Represents the type of connection |
| [`HtmlFormatHandlingType`](/cells/python-net/aspose.cells.externalconnections/htmlformathandlingtype) | Specifies how to handle formatting from the HTML source |
| [`OLEDBCommandType`](/cells/python-net/aspose.cells.externalconnections/oledbcommandtype) | Specifies the OLE DB command type. |
| [`ReConnectionMethodType`](/cells/python-net/aspose.cells.externalconnections/reconnectionmethodtype) | Specifies what the spreadsheet application should do when a connection fails. |
| [`SqlDataType`](/cells/python-net/aspose.cells.externalconnections/sqldatatype) | Specifies SQL data type of the parameter. Only valid for ODBC sources. |