Title :
HoTQuel: a history-oriented temporal query language
Author :
Grandi, Fabio ; Scales, M.R.
Author_Institution :
Dipartimento di Elettronica Inf. e Sistemistica, Bologna Univ., Italy
Abstract :
The history-oriented temporal query language (HoTQuel), which has been conceived to best fit the semantic nature of temporal data both from the system´s and the user´s viewpoint, is presented. HoTQuel enforces the concept of history-placed between key and tuple concepts-applying a history-oriented data selection method in retrievals and updates. A unified recording operation allows updates that are transparent to the user, relieving him of the need for great expertise in temporal databases and detailed knowledge of the present database content. Whatever transactions are issued via HoTQuel statements, data consistency and adherence to reality are preserved throughout their execution
Keywords :
database management systems; query languages; HoTQuel; data consistency; data selection; history-oriented temporal query language; key; recording operation; retrievals; temporal data; temporal databases; tuple; updates; Control systems; Data models; Database languages; Decision support systems; Design methodology; Proposals; Prototypes; Taxonomy; Transaction databases; Transmission line measurements;
Conference_Titel :
CompEuro '91. Advanced Computer Technology, Reliable Systems and Applications. 5th Annual European Computer Conference. Proceedings.
Conference_Location :
Bologna
Print_ISBN :
0-8186-2141-9
DOI :
10.1109/CMPEUR.1991.257483
