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ODBC Classes

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These classes work with the other application framework classes to give easy access to a wide variety of databases for which Open Database Connectivity (ODBC) drivers are available.

Programs that use ODBC databases will have at least a CDatabase object and a CRecordset object.

CDatabase
Encapsulates a connection to a data source, through which you can operate on the data source.

CRecordset
Encapsulates a set of records selected from a data source. Recordsets enable scrolling from record to record, updating records (adding, editing, and deleting records), qualifying the selection with a filter, sorting the selection, and parameterizing the selection with information obtained or calculated at run time.

CRecordView
Provides a form view directly connected to a recordset object. The dialog data exchange (DDX) mechanism exchanges data between the recordset and the controls of the record view. Like all form views, a record view is based on a dialog template resource. Record views also support moving from record to record in the recordset, updating records, and closing the associated recordset when the record view closes.

CDBException
An exception resulting from failures in data access processing. This class serves the same purpose as other exception classes in the exception-handling mechanism of the class library.

CFieldExchange
Supplies context information to support record field exchange (RFX), which exchanges data between the field data members and parameter data members of a recordset object and the corresponding table columns on the data source. Analogous to class CDataExchange, which is used similarly for dialog data exchange (DDX).

CLongBinary
Encapsulates a handle to storage for a binary large object (BLOB), such as a bitmap. CLongBinary objects are used to manage large data objects stored in database tables.

CDBVariant
Allows you to store a value without worrying about the value's data type. CDBVariant tracks the data type of the current value, which is stored in a union.

See also

Class Overview