A Recovery Method Supporting User-Interactive Undo in Database Management Systems
Won-Yeong Kim, Gyu-Yeong Hwang, Sang Kim, Jang Hwan Kim · 1999
User-interactive undo is a kind of recovery facility that allows users to correct mistakes easily by canceling and reexecuting operations that have already been executed. Supporting userinteractive undo is essential for authoring processes in new database applications such as software engineering, hypermedia, and computer-aided design. A partial rollback using savepoints supported by commercial database management systems(DBMSs), which allows only cancellation of executed operations, is a restricted form of user-interactive undo. Although many applications use DBMSs, they have to provide user-interactive undo by themselves due to lack of support from the DBMSs. Since implementation of user-interactive undo is quite complex, it poses significant burden to application programmers. This paper proposes a new recovery method facilitating user-interactive undo in DBMSs. Such a facility relieves the programmers of implementing user-interactive undo themselves in developing DBMS applications. ...