Nóta
Aðgangur að þessari síðu krefst heimildar. Þú getur prófað aðskrá þig inn eða breyta skráasöfnum.
Aðgangur að þessari síðu krefst heimildar. Þú getur prófað að breyta skráasöfnum.
The following table shows the mandatory and optional interfaces defined by OLE DB for a session object.
| Interface | Required? | Implemented by OLE DB templates? |
|---|---|---|
| IGetDataSource | Mandatory | Yes |
| IOpenRowset | Mandatory | Yes |
| ISessionProperties | Mandatory | Yes |
| IAlterIndex | Optional | No |
| IAlterTable | Optional | No |
| IBindResource | Optional | No |
| ICreateRow | Optional | No |
| IDBCreateCommand | Optional | Yes |
| IDBSchemaRowset | Optional | Yes |
| IIndexDefinition | Optional | No |
| ISupportErrorInfo | Optional | Yes |
| ITableCreation | Optional | No |
| ITableDefinition | Optional | No |
| ITableDefinitionWithConstraints | Optional | No |
| ITransaction | Optional | No |
| ITransactionJoin | Optional | No |
| ITransactionLocal | Optional | No |
| ITransactionObject | Optional | No |
The session object creates a rowset object. If the provider supports commands, the session also creates a command object (CCommand, implementing the OLE DB TCommand). The command object implements the ICommand interface and uses the ICommand::Execute method to execute commands on the rowset, as shown in the following figure.
