Data Manipulation Classes
Also essential to the DB Interface Module are the data manipulation classes, which encapsulate common database operations.
RWDBSelector, RWDBUpdater, RWDBInserter, and RWDBDeleter correspond to the basic database operations select, update, insert, and delete respectively. RWDBSelectorBase and RWDBCompoundSelector are related to these.RWDBResult, RWDBReader, and RWDBCursor are used to process results.
