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Outputs (237)

A strategy for semantic integrity enforcement in a parallel database machine (1994)
Presentation / Conference Contribution
McCarroll, N., & Kerridge, J. (1994, July). A strategy for semantic integrity enforcement in a parallel database machine. Presented at Directions in Databases: 12th British National Conference on Databases, BNCOD 12, Guildford, UK

Semantic integrity constraints represent knowledge about data with which a relational database must be consistent. To enforce semantic integrity we must ensure that transactions which alter the database will preserve database consistency by accompany... Read More about A strategy for semantic integrity enforcement in a parallel database machine.

Benchmarking parallel SQL database machines (1994)
Presentation / Conference Contribution
Jelly, I., Kerridge, J., & Bates, C. (1994, July). Benchmarking parallel SQL database machines. Presented at Directions in Databases 12th British National Conference on Databases, BNCOD 12, Guildford, UK

New parallel database systems are being developed to support the data processing needs of large commercial organisations: these offer increased performance in terms of processing throughput and enhanced support for both on-line transaction processing... Read More about Benchmarking parallel SQL database machines.

Large scale data management and massively parallel architectures in Automatic Fingerprint Recognition (1994)
Presentation / Conference Contribution
Walter, D., & Kerridge, J. (1994, April). Large scale data management and massively parallel architectures in Automatic Fingerprint Recognition. Presented at High-Performance Computing and Networking: International Conference and Exhibition, Munich, Germany

The National Transputer Support Centre is an independent parallel processing consultancy specialising in large scale data management and parallel databases. We were approached recently by the Home Office to investigate the data management aspects of... Read More about Large scale data management and massively parallel architectures in Automatic Fingerprint Recognition.

Dynamic allocation of processes and channels in T9000/C104 networks using occam3 (1994)
Presentation / Conference Contribution
Kerridge, J. (1994, April). Dynamic allocation of processes and channels in T9000/C104 networks using occam3. Presented at WoTUG-17: 17th World occam* and Transputer User Group Technical Meeting, Bristol, UK

The hardware of the Inmos T9000 transputer contains a resource channel mechanism which is used to implement a many-to-one client server programming model. This model has also been captured in occam3. The resource channel mechanism provided by the har... Read More about Dynamic allocation of processes and channels in T9000/C104 networks using occam3.

Parameterised Types in occam3(e) (1994)
Presentation / Conference Contribution
Chutimaskul, W., & Kerridge, J. (1993, June). Parameterised Types in occam3(e). Presented at 6th Transputer and Occam International Conference, Tokyo, Japan

Lightweight threads for portable software (1993)
Presentation / Conference Contribution
Russell, G. (1993, January). Lightweight threads for portable software. Presented at Networking-the Next Generation, UKUUG/SUKUG Conference

No abstract available.

Using a persistent system to construct a customised interface to an ecological db. (1993)
Presentation / Conference Contribution
Barclay, P. J., Fraser, C., & Kennedy, J. (1992, July). Using a persistent system to construct a customised interface to an ecological db. Presented at 1st International workshop on Interfaces to Database

New applications of information technology have increasingly sophisticated user interface requirements. Such interfaces are sometimes highly application specific and therefore require to be customised to the given application area. Technology is requ... Read More about Using a persistent system to construct a customised interface to an ecological db..

Viewing objects. (1993)
Presentation / Conference Contribution
Barclay, P. J., & Kennedy, J. (1993, July). Viewing objects. Presented at 11th British National Conference on Database System, Keele, UK

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 preexist... Read More about Viewing objects..

Automatic Position and Orientation Correction for Automated Assembly Robots (1993)
Presentation / Conference Contribution
Rea, H. J., Raeside, R., & Lewis, J. (1993, March). Automatic Position and Orientation Correction for Automated Assembly Robots. Presented at Thirtieth International MATADOR Conference, Manchester, UK

For assembly purposes, robot accuracy is critical only in small well-defined volumes, such as immediately over a pallet or work table where pieces are being lifted and assembled. Since the volumes are small it is possible to consider the robot system... Read More about Automatic Position and Orientation Correction for Automated Assembly Robots.

An Appreciation of the Subtleties of Shared Channels in occam3 (1993)
Presentation / Conference Contribution
Waithe, S., & Kerridge, J. (1993, March). An Appreciation of the Subtleties of Shared Channels in occam3. Presented at 16th World occam* and Transputer User Group Technical Meeting (WoTUG-16), Sheffield, UK

By exploiting virtual channels implemented on the INMOS T9000 transputer, occam3 offers the facility of sharing. This allows us to declare a channel as SHARED which then allows an arbitrary number of processes to communicate across this channel. By m... Read More about An Appreciation of the Subtleties of Shared Channels in occam3.

Modelling ecological data. (1992)
Presentation / Conference Contribution
Barclay, P. J., & Kennedy, J. (1992, June). Modelling ecological data. Presented at 6th International Workshop on Scientific and Statistical Database Management, 1992

Ecological surveys generate large quantities of data; database technology has not yet reached its full
potential in this area. Here we investigate approaches to modelling ecological data, considering the require-
ments for a successful model. An ob... Read More about Modelling ecological data..

Control of a large massively parallel database machine using SQL catalogue extensions, and a DSDL in preference to an operating system (1992)
Presentation / Conference Contribution
Unwalla, M., & Kerridge, J. (1992, July). Control of a large massively parallel database machine using SQL catalogue extensions, and a DSDL in preference to an operating system. Presented at Advanced Database Systems: 10th British National Conference on Databases, BNCOD 10, Aberdeen, Scotland

The IDIOMS parallel database machine supports large applications where integrated OLTP and MIS is required. It can be considered a relational engine, and SQL is used as the MIS query language. We make some comparisons between IDIOMS and other databas... Read More about Control of a large massively parallel database machine using SQL catalogue extensions, and a DSDL in preference to an operating system.

Regaining the conceptual level in object oriented modelling (1991)
Presentation / Conference Contribution
Barclay, P. J., & Kennedy, J. (1991, July). Regaining the conceptual level in object oriented modelling. Presented at 9th British National Conference on Database - BNCOD9, 1991

This paper attempts to develop a conceptual model for the object oriented description of data. We abstract from various logical model features essential for thinking about data in an object oriented framework. These features are presented through exa... Read More about Regaining the conceptual level in object oriented modelling.

The Design of the IDIOMS Parallel Database Machine (1991)
Presentation / Conference Contribution
Kerridge, J. M. (1991, December). The Design of the IDIOMS Parallel Database Machine. Presented at 9th British National Conference on Databases (BNCOD), Wolverhampton Polytechnic, UK

Design, abstract data types and occam (1989)
Presentation / Conference Contribution
Kerridge, J., Wright, S., & Oates, R. (1989, April). Design, abstract data types and occam. Presented at 10th Occam User Group Technical Meeting, Enschede, The Netherlands

A design methodology is presented whereby abstract data types are mapped onto occam processes. For each function a command and reply protocol is specified. Attention is paid to the formal specification. The method may be useful in obtaining a paralle... Read More about Design, abstract data types and occam.