ADO.NET in a Nutshell

OCI (Oracle Call Interface)  

ODBC .NET provider   2nd  

       connection pooling and  

       connection strings and  

       recommendations for selecting  

ODP.NET provider  

OLE DB .NET provider   2nd  

       connection pooling and  

       connection strings and  

       parameterized queries and  

       recommendations for selecting  

       schema tables, retrieving with  

OleDbConnection class  

OleDbDataAdapter class  

OleDbDataReader class  

OleDbError class  

OleDbErrorCollection class  

OleDbException class  

OleDbInfoMessageEventArgs class  

OleDbInfoMessageEventHandler delegate  

OleDbLiteral enumeration  

OleDbParameter class  

OleDbParameterCollection class  

OleDbPermission class  

OleDbPermissionAttribute class  

OleDbRowUpdatedEventArgs class  

OleDbRowUpdatedEventHandler delegate  

OleDbRowUpdatingEventArgs class  

OleDbRowUpdatingEventHandler delegate  

OleDbSchemaGuid class  

OleDbTransaction class  

OleDbType enumeration  

Open( ) method, for connections  

Oracle .NET provider   2nd  

       connection pooling and   2nd  

       connection strings and  

Oracle Call Interface (OCI)  

Ordinal property  

Original row version  

OSQL utility  

output parameters  

       stored procedures and  

       using to retrieve updated values from data source