Integrating object-oriented data modelling with a rule-based programming paradigm

none5LOGRES is a new project for the development of extended database systems which is based on the integration of the object-oriented data modelling paradigm and of the rule-based approach for the specification of queries and updates. The data model supports generalization hierarchies and object sharing, the rule-based language extends Datalog to support generalized type constructors (sets, multisets, and sequences), rule-based integrity constraints are automatically produced by analyzing schema definitions. Modularization is a fundamental feature, as modules encapsulate queries and updates, when modules are applied to a LOGRES database, their side effects can be controlled. The LOGRES project is a follow-up of the ALGRES project, and takes advantage of the ALGRES programming environment for the development of a fast prototype.F. Cacace;S. Ceri;S. Crespi-Reghizzi;L. Tanca;R. ZicariF., Cacace; Ceri, Stefano; CRESPI REGHIZZI, Stefano; Tanca, Letizia; R., Zicar

Episodi febbrili e somministrazione di antibiotici nel primo anno di vita e sviluppo di asma e atopia.

Riva del Garda (TN), Italy