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Constraint Databases
 In Conference on Information Technology and its Use in Environmental Monitoring and Protection
, 1995
"... Introduction Computer support for environmental monitoring involves complex data management. Data flows continually into the system and concurrently the data is analysed, in complex ways for validation, forecasting and the detection of significant events. This functionality can be supported by buil ..."
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Cited by 1 (0 self)
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of data). Moreover there are many technical problems which result in unexpected restrictions (eg in the management of concurrent updates). Constraint databases offer, within a single integrated database system, support for enhanced handling of data and knowledge. In the following we show the application
Constraint Databases: A Survey
 Semantics in Databases, number 1358 in LNCS
, 1998
"... . Constraint databases generalize relational databases by finitely representable infinite relations. This paper surveys the state of the art in constraint databases: known results, remaining open problems and current research directions. The paper also describes a new algebra for databases with inte ..."
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Cited by 25 (3 self)
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. Constraint databases generalize relational databases by finitely representable infinite relations. This paper surveys the state of the art in constraint databases: known results, remaining open problems and current research directions. The paper also describes a new algebra for databases
Foundations of Temporal Constraint Databases
, 1994
"... An important requirement of advanced temporal applications is the ability to deal with definite, indefinite, finite and infinite temporal information. There is currently no database model which offers this functionality in a single unified framework. We argue that the combination of relational datab ..."
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Cited by 18 (7 self)
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databases and temporal constraints offers a powerful framework which addresses these needs. In this thesis we develop the foundations of a theory of temporal constraint databases and indefinite temporal constraint databases. At first, we study a hierarchy of parameterized database models: ML relational
Variable Independence in Constraint Databases
 IEEE Transactions on Knowledge and Data Engineering
, 1998
"... In this paper we study constraint databases with variable independence conditions (vics). Such databases occur naturally in the context of temporal and spatiotemporal database applications. Using computational geometry techniques, we show that variable independence is decidable for linear constra ..."
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Cited by 5 (2 self)
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In this paper we study constraint databases with variable independence conditions (vics). Such databases occur naturally in the context of temporal and spatiotemporal database applications. Using computational geometry techniques, we show that variable independence is decidable for linear
Extending the Constraint Database Framework
, 2003
"... Constraint Databases (CDBs) are an extension of relational databases that enrich both the relational data model and the relational query primitives with constraints. By providing a finite representation of data with infinite semantics, the Constraint Database approach is particularly appropriate for ..."
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Constraint Databases (CDBs) are an extension of relational databases that enrich both the relational data model and the relational query primitives with constraints. By providing a finite representation of data with infinite semantics, the Constraint Database approach is particularly appropriate
Foundations of Indefinite Constraint Databases
 Proceedings of the 2nd International Workshop on the Principles and Practice of Constraint Programming (PPCP'94), volume 874 of Lecture Notes in Computer Science
, 1994
"... . We lay the foundations of a theory of constraint databases with indefinite information based on the relational model. We develop the scheme of indefinite Lconstraint databases where L, the parameter, is a firstorder constraint language. This scheme extends the proposal of Kanellakis, Kuper and R ..."
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Cited by 10 (8 self)
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. We lay the foundations of a theory of constraint databases with indefinite information based on the relational model. We develop the scheme of indefinite Lconstraint databases where L, the parameter, is a firstorder constraint language. This scheme extends the proposal of Kanellakis, Kuper
Animating Spatiotemporal Constraint Databases
, 1999
"... . Constraint databases provide a very expressive framework for spatiotemporal database applications. However, animating such databases is difficult because of the cost of constructing a graphical representation of a single snapshot of a constraint database. We present a novel approach that makes ..."
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Cited by 10 (4 self)
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. Constraint databases provide a very expressive framework for spatiotemporal database applications. However, animating such databases is difficult because of the cost of constructing a graphical representation of a single snapshot of a constraint database. We present a novel approach
An Extended Algebra for Constraint Databases
 IEEE Transactions on Knowledge and Data Engineering
, 1999
"... Constraint relational databases use constraints to both model and query data. A constraint relation contains a finite set of generalized tuples. Each generalized tuple is represented by a conjunction of constraints on a given logical theory and, depending on the logical theory and the specific conju ..."
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Cited by 21 (3 self)
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Constraint relational databases use constraints to both model and query data. A constraint relation contains a finite set of generalized tuples. Each generalized tuple is represented by a conjunction of constraints on a given logical theory and, depending on the logical theory and the specific
On the Orthographic Dimension of Constraint Databases
, 1998
"... . One of the most important advantages of constraint databases is their ability to represent and to manipulate data in arbitrary dimension within a uniform framework. Although the complexity of querying such databases by standard means such as firstorder queries has been shown to be tractable for r ..."
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Cited by 25 (8 self)
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. One of the most important advantages of constraint databases is their ability to represent and to manipulate data in arbitrary dimension within a uniform framework. Although the complexity of querying such databases by standard means such as firstorder queries has been shown to be tractable
Aggregation in Constraint Databases
"... We discuss the issues that arise when we add aggregation to a constraint database query language. One example of the use of aggregation in such a context is to compute the area of a region in a geographic database. We show how aggregation could be added to the query language, tuple calculus, and dis ..."
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We discuss the issues that arise when we add aggregation to a constraint database query language. One example of the use of aggregation in such a context is to compute the area of a region in a geographic database. We show how aggregation could be added to the query language, tuple calculus
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