Search results for: Peter J. Barclay

Items from 1 to 8 out of 8 results

chapter

Viewing objects

Peter J. Barclay, Jessie B. Kennedy

Lecture Notes in Computer Science > Advances in Databases > 93-110

This paper examines the incorporation of database views into an object oriented conceptual model. An approach is presented where views are themselves objects, instances of view classes. These view objects provide new ways of interacting with preexisting data; no new objects are required to populate the view. Although this approach requires no new concepts to be added to the object oriented data model,...

chapter

Integrating View Schemata Using an Extended Object Definition Language

Mark Roantree, Jessie B. Kennedy, Peter J. Barclay

Lecture Notes in Computer Science > Cooperative Information Systems > Information Integration > 150-163

Viewm echanisms play an important role in restructuring data for users, while maintaining the integrity and autonomy for the underlying database schema. Although far more complex than their relational counterparts, numerous object-oriented viewm echanisms have been specified and implemented over the last decade. These viewmec hanisms have served different functions: viewsc hemata for object-oriented...

chapter

Using a conceptual data language to describe a database and its interface

Kenneth J. Mitchell, Jessie B. Kennedy, Peter J. Barclay

Lecture Notes in Computer Science > Advances in Databases > 101-119

We propose a conceptual approach to defining interfaces to databases which uses the features of a fully object oriented data language to specify interface objects combined with database objects. This achieves a uniform, natural way of describing databases and their interfaces. It is shown how this language can be used in the role of data definition and, when combined with interface classes, in the...

chapter

A conceptual language for querying object oriented data

Peter J. Barclay, Jessie B. Kennedy

Lecture Notes in Computer Science > Directions in Databases > 187-204

A variety of languages have been proposed for object oriented database systems in order to provide facilities for ad hoc querying. However, in order to model at the conceptual level, an object oriented schema definition language must itself provide facilities for describing the behaviour of data. This paper demonstrates that with only modest extensions, such a schema definition language may serve...

chapter

Using a Metadata Software Layer in Information Systems Integration

Mark Roantree, Jessie B. Kennedy, Peter J. Barclay

Lecture Notes in Computer Science > Advanced Information Systems Engineering > 299-314

A Federated Information System requires that multiple (often heterogenous) information systems are integrated to an extent that they can share data. This shared data often takes the form of a federated schema, which is a global view of data taken from distributed sources. One of the issues faced in the engineering of a federated schema is the continuous need to extract metadata from cooperating systems...

chapter

Evolved Bayesian Network models of rig operations in the gulf of Mexico

François A Fournier, John McCall, Andrei Petrovski, Peter J Barclay

IEEE Congress on Evolutionary Computation > 1 - 7

2010 IEEE Congress on Evolutionary Computation

The operation of drilling rigs is highly expensive. It is therefore important to be able to identify and analyse factors affecting rig operations. We investigate the use of two Genetic Algorithms, K2GA and ChainGA, to induce a Bayesian Network model for the real world problem of Rig Operations Management. We sample from a unique dataset derived from the commercial market intelligence databases assembled...

article

Teallach: a model-based user interface development environment for object databases

Tony Griffiths, Peter J. Barclay, Norman W. Paton, Jo McKirdy, more

Interacting with Computers > 2001 > 14 > 1 > 31-68

Model-based user interface development environments show promise for improving the productivity of user interface developers, and possibly for improving the quality of developed interfaces. While model-based techniques have previously been applied to the area of database interfaces, they have not been specifically targeted at the important area of object database applications. Such applications make...

article

bclasses: A construct and method for modelling co-operative object behaviour

Bryn R. Marshall, Jessie B. Kennedy, Peter J. Barclay

Information and Software Technology > 1997 > 39 > 5 > 351-361

Current object-oriented (OO) modelling techniques emphasise the static aspects of data objects. Dynamics in general and collaborations between objects in particular tend to be poorly supported and are often treated separately. A full understanding of an object is hindered if we cannot easily grasp what it can do as well as what it is. We require a way of expressing collaborations. Our approach...

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INFONA - science communication portal

Search results for: Peter J. Barclay

Viewing objects

Integrating View Schemata Using an Extended Object Definition Language

Using a conceptual data language to describe a database and its interface

A conceptual language for querying object oriented data

Using a Metadata Software Layer in Information Systems Integration

Evolved Bayesian Network models of rig operations in the gulf of Mexico

Teallach: a model-based user interface development environment for object databases

bclasses: A construct and method for modelling co-operative object behaviour

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