Method for assuring atomicity of multi-row update operations in a database system

摘要: A method for assuring atomicity of user requested multi-row update operations to tables such as in a relational database, guarantees that any operation succeeds all stated effects will have occurred and fails the system state perceived by remains unchanged. This is accomplished establishing, response request, an execution module program containing sets machine language code instructions implementing request with savepoint at beginning program. For each set or called which modified state, information logged soft log. Upon completing program, dropped, causing log recorded since be deleted releasing resources held guarantee restoration time request. Responsive detection error during used restore existing