The InterBaseView Graphical User Interface

This paper presents the graphical user interface InterBaseView for Inter-Base ECD + 92], a multidatabase system processing global applications written in the InterBase Parallel Language (IPL) BCC + 92] and accessing data from heterogeneous database and le systems. The primary design objective of In-terBaseView is to provide users with convenience and conndence in interacting with InterBase. InterBaseView consists of an execution interface and an IPL program editor. During the execution of an IPL transaction program, the execution interface displays the execution history, the dependence relations among subtransactions, the intermediate results, and the nal results. It can also request input from users at run-time through dialog windows. From a group of successful acceptable alternative subtransaction sets for a global transaction, a user can select the preferred alternative to commit the global transaction, thus supporting Flex transactions ELLR90]. Additionally, the intelligent IPL program editor, an application development tool, can assist users in convenient construction of IPL application programs.