Titlebook: Entity-Relationship Approach - ER ‘92; 11th International C G. Pernul,AM. Tjoa Conference proceedings 1992 Springer-Verlag Berlin Heidelber

圓桶

圍巾

Conflagration

IRK

vertebrate

Gourmet

路標(biāo)

HVDC in the Future Power Systems,ce and time overhead on instance level, but it turns out that data dictionary overhead also keeps within reasonable limits..Please note that the valence concept is not a complete data model by itself, but a relationship model which can be embedded in a wide range of data models.

歪曲道理

取之不竭

Alexandra Wake,Drew Ambrose,Damian Grenfells, realizing incremental changes to the database schema and their propagation to data instances. We show, how each schema update of a given taxonomy is realized by direct updating of schema objects, and how this approach can be used to build a complete tool for database evolution.

DEMUR

Conference proceedings 19929, 1992. It containsthe full versions of all the 22 accepted papers selectedfrom in total 64 submissions; in addition, the twoinvitedtalks by Scheer and by Tsichritzis and others arerepresented asfull papers and the two other invitedspeakers contribute extendedabstracts.All the contributions describ