This paper studies referential integrity in multilevel relations with element-level labeling. Our principal contribution is resolution of an impasse left by previous work in this area. We show that the previous work leaves us with a choice of either accepting referential ambiguity, or severely curtailing the modeling power of multilevel relations. We then show how to escape this impasse by elim...

This paper describes what we take to be the correct perspective on the 'empiricist' vs 'rationalist' debate which is the dominant theme of this workshop, and describes a technique for dealing with the translation problems that arise where languages differ in the conditions they impose, and the strategies they employ for expressing different kinds of referential or anaphoric dependence.

Contextual Integrity has been proposed to define privacy in an unusual way. Most approaches take into account a sensitivity level or a “privacy circle”: the information is said to be private or public and to be constrained to a given group of agents, e.g. “my friends”. In the opposite, Contextual Integrity states that any information transmission can trigger a privacy violation depending on the...

This dissertation is a study of rules in Turkish which change grammatical relations or are sensitive to them. It addresses issues of interest to descriptive Turkish grammar and 10 general linguistic theory. Two chapters are devoted to questions about intransitive clauses. Chap' AT 2 examines the claim that impersonal passivizatlon, like personal passivization, involves the advancement of a dire...

The relational model of data incorporates fundamental assertions for entity integrity and referential integrity. Recently, these so-called relational invariants were more precisely specified by the new SQL2 standard. Accordingly, they have to be guaranteed by a relational DBMS to its users and, therefore, all issues of semantics and implementation became very important. The specification of ref...

Referential integrity constraints express in relational databases existence dependencies between tuples. Although it is known that certain referential integrity structures may cause data manipulation problems, the nature of these problems has not been explored and the conditions for avoiding them have not been formally developed. In this paper we examine these data manipulation problems and for...

Referential expressions are used to introduce and continue reference to entities with par ticular referential properties, but also with particular discourse properties. In this paper we investigate the referential and discourse properties of pemarked indefi nite direct objects in Romanian, which are an instance of Diff erential Object Marking (DOM). Pe -marking is generally obligatory for defi ...

Referential actions are specialized triggers used to automatically maintain referential integrity. While their local behavior can be grasped easily, it is far from clear what the combined eeect of a set of referential actions, i.e., their global semantics should be. For example, diierent execution orders may lead to ambiguities in determining the nal set of updates to be applied. To resolve the...

This paper introduces the concept of local referential integrity according to which an object may only reference objects belonging to the same composite object. For example, in production planning an employee of some department may only be scheduled to work on machines belonging to the same department. Usually, such a constraint must be stated explicitly by a predicate as \add on" to a database...