Integrity constraints are rules which should guarantee the integrity of a database.Provided that an adequate mechanism to express them is available, the following question arises: is there any way to populate a database which satisfies the constraints supplied by a designer? i.e., does the database schema, including constraints, admit at least one model in which all classes are non-empty?This work gives an answer to the above question in an OODB environment, providing a Data Definition Language (DDL) able to express the semantics of a relevant set of state constraints and a specialized reasoner able to check the consistency of a schema with such constraints.The choice of the set of constraints expressed in the DDL is motivated by decidability issues.

Consistency checking in Complex Objects Database schemata with integrity constraints / Beneventano, Domenico; Bergamaschi, Sonia; S., Lodi; C., Sartori. - STAMPA. - (1995), pp. 48-57. ((Intervento presentato al convegno International Workshop on Database Programming Languages (DBPL) tenutosi a Gubbio, Umbria, Italy nel 6-8 September 1995.

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