7726004
Ideas in Teaching, Learning and Assessment of Databases: A Communication of the 7thInternational Workshop on Teaching, Learning and Assessment of Databases (TLAD 2009)
This paper is a record of the Seventh International Workshop on the Teaching, Learning and Assessment of Databases (TLAD 2009). Based on the contributions received, the paper describes the efforts that academics based in the UK and elsewhere around the world have made towards finding and disseminating new and interesting ways to enhance the teaching and learning of the database subject area. This year most of the submissions centred around the following areas: issues in teaching for databases and how to resolve these; methods for teaching enterprise systems development and the relevance of databases; interactive and collaborative learning support environments; and tools to aid learning in the database area.
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Database: Enterprise, Skills and Innovation, 22nd British National Conference on Databases, BNCOD 22, Sunderland, UK, July 5-7, 2005, Proceedings
Invited Paper.- Databases in Grid Applications: Locality and Distribution.- Spatio-temporal Databases.- Spatial Hierarchies and Topological Relationships in the Spatial MultiDimER Model.- Multidimensional Structures Dedicated to Continuous Spatiotemporal Phenomena.- TimeERplus: A Temporal EER Model Supporting Schema Changes.- Data Integration and Information Retrieval.- Semantically Rich Materialisation Rules for Integrating Heterogeneous Databases.- Answering Queries Using Views in the Presence of Functional Dependencies.- LAX: An Efficient Approximate XML Join Based on Clustered Leaf Nodes for XML Data Integration.- Exploitation of Referential Integrity Constraints for Efficient Update of Data Warehouse Views.- Correlation-Based Data Broadcasting in Wireless Networks.- Hierarchical Group-Based Sampling.- Using Schema Transformation Pathways for Data Lineage Tracing.- XML.- XDGL: XPath-Based Concurrency Control Protocol for XML Data.- Updating XML Using Object-Relational Database.- Applied Information Management.- Image Retrieval Using Weighted Color Co-occurrence Matrix.- Street Address Correction Based on Spelling Techniques.- Personalising Patient Information in the Real World.- Republishers in a Publish/Subscribe Architecture for Data Streams.
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Database Interoperability using a Database's own Natural Query Language
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Managing Schema Versions in Object-Oriented Databases
The schemas of object-oriented databases are frequently changed in advanced applications such as Computer-Aided Design. This generates many schema versions that are used to model the evolving structure of a real world entity. Thus, there exists a need for an adequate method of managing the schema versions effectively, so that the user can trace the history of the changing schema with ease. In this paper, we propose a nested matrix model for the management of schema versions in object-oriented databases. The model maintains a semantic set of relationships between the schema versions. The advantages of our work include the provision of a logical representation for schema versions that are not addressed sufficiently in exiting models and the development of a graphic querying interface.
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A Nested Matrix Model for Schema Versioning in Object-Oriented Databases
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Interactive video—a producer's medium
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A database system for constructing, integrating, and displaying physical maps of chromosome 19
Efforts are underway at numerous sites around the world to construct physical maps of all human chromosomes. These maps will enable researchers to locate, characterize, and eventually understand the genes that control human structure and function. The volume and complexity of the data already generated requires a sophisticated array of computational support to collect, store, analyze, integrate and display data in biologically meaningful ways. The Human Genome Center at Livermore has spent the past 6 years constructing a database system to support its physical mapping efforts on human chromosome 19. Our computational support team is composed of experienced computer professionals who share a common pragmatic primary goal of rapidly supplying tools that meet the ever-changing needs of the biologists. In this paper, we concentrate on the design issues, tradeoffs, and consequences from the point of view of building a complex database system to support leading-edge genomic research. We introduce the topic of physical mapping, discuss the key design issues involved in our database, and discuss the use of this data by our major tools (DNA fingerprint analysis and overlap computation, contig assembly, map integration and database browsing). Given the advantage of hindsight, we discuss what worked, what didn't, and where to go from here. As early pioneers in this field, we hope that our experience may prove useful to others who are now beginning to design and construct similar systems.<<ETX>>
33800485
Non-Null Implication
An implication A ⊃ B is said to be null in case A is false in all instances. This note describes several formal systems for first-order predicate logic and arithmetic in which null implications do not occur. In fact, the most restrictive systems avoid the occurrences of any formulas which represent null predicates. The precise sense of this avoidance is explained below. An intuitionistic negation is a statement of the form A ⊃ F where F is a contradiction. The absence of null implications among true statements entails the absence of intuitionistic negations, and hence systems described here might be called negationless intuitionistic systems.
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Experiences in Deploying Model-Driven Engineering
In this paper, we describe how Motorola has deployed model-driven engineering in product development, in particular for the development of highly reliable telecommunications systems, and outline the benefits obtained. Model-driven engineering has dramatically increased both the quality and the reliability of software developed in our organization, as well as the productivity of our software engineers. Our experience demonstrates that model-driven engineering significantly improves the development process for telecommunications systems. We discuss the elements we found most important for deployment of model-driven engineering in a large product development organization: An appropriate modeling language, a powerful domain-specific code generator, and a deployment support team.
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SIGGRAPH public policy committee activity detailed
We start this column with the results of our third on-line opinion survey on public policy issues affecting computer graphics. Next we provide an introduction to and a copy of the definition paper for a prospective study of computer graphics research to be conducted by the National Research Council with partial funding from SIGGRAPH. This is followed by an update on our activities in proposing a course on public policy and a panel on digital rights management of intellectual property for SIGGRAPH 2001. Myles Losch provides an update on the issues related to the slow pace of adoption of Digital TV. Finally, we close with another set of comments from a reader.