OLE DB (Object Linking and Embedding Database) is a Microsoft technology that allows different applications to access various data sources, such as databases, file systems, and other data storage systems, using a common set of APIs (Application Programming Interfaces).
The is particularly notable: it can transform a forward-only, read-only rowset into a fully scrollable, updateable rowset by maintaining a client-side copy. This came at a significant memory and marshalling cost but enabled uniform scrolling across all data sources. OLE DB (Object Linking and Embedding Database) is
// Create a new OleDbCommand object OleDbCommand command = new OleDbCommand("SELECT * FROM example_table", connection); // Create a new OleDbCommand object OleDbCommand command
OLE DB, Universal Data Access, COM, Rowset, Data Provider, Query Processing, Legacy Systems. Older implementations like MDAC or WDAC are still
// Execute the command and read the results OleDbDataReader reader = command.ExecuteReader(); while (reader.Read()) { Console.WriteLine(reader["column_name"].ToString()); } } } catch (Exception ex) { Console.WriteLine("An error occurred: " + ex.Message); } } }
: OLE DB is strictly a Windows-based technology , whereas ODBC is widely supported across multiple operating systems. CData Software +2 Current Relevance For modern development, Microsoft recommends using the OLE DB Driver for SQL Server if your application requires access to newer SQL Server features (like XML data types or snapshot isolation). Older implementations like MDAC or WDAC are still used for mature, legacy applications that do not need these advancements. Microsoft Learn Would you like to see a specific