Database Theory - ICDT '92

Database Theory - ICDT '92
Author: Joachim Biskup
Publisher: Springer Science & Business Media
Total Pages: 466
Release: 1992-10-05
Genre: Computers
ISBN: 9783540560395

The papers in this volume were presented at the International Conference on Database Theory, held in Berlin, Germany, October 14-16, 1992. This conference initiated the merger of two series of conferences on theoretical aspects of databases that were formed in parallel by different scientific communities in Europe. The first series was known as the International Conference on Database Theory and the second as the Symposium on Mathematical Fundamentals of Database Systems. In the future, ICDT will be organized every two years, alternating with the more practically oriented series of conferences on Extending Database Technology (EDBT). The volume contains 3 invited lectures and 26 contributed papers selected from a total of 107 submissions. The papers are organized into sections on constraints and decomposition, query languages, updates and active databases, concurrency control and recovery, knowledge bases, datalog complexity and optimization, object orientation, information capacity and security, and data structures and algorithms. Two of the invited papers survey research into theoretical database issues done in Eastern Europe during the past decade.

Database Theory - ICDT '95

Database Theory - ICDT '95
Author: Georg Gottlob
Publisher: Springer Science & Business Media
Total Pages: 472
Release: 1995-01-03
Genre: Computers
ISBN: 9783540589075

This volume presents the proceedings of the 1995 International Conference on Database Theory, ICDT '95, held in Prague in January 1995. Besides two full invited papers and the abstracts of two tutorials, the book includes the revised full versions of 29 technical contributions selected from a total of 116 submissions. The papers address all current aspects of database theory; they are organized in sections on optimization, nonmonotonic semantics, query languages, concurrency control, advanced models, probabilistic methods, constraints and dependencies, and Datalog analysis.

Correct Hardware Design and Verification Methods

Correct Hardware Design and Verification Methods
Author: George J. Milne
Publisher: Springer Science & Business Media
Total Pages: 284
Release: 1993-05-12
Genre: Computers
ISBN: 9783540567783

These proceedings contain the papers presented at the Advanced Research Working Conference on Correct Hardware Design Methodologies, held in Arles, France, in May 1993, and organized by the ESPRIT Working Group 6018 CHARME-2and the Universit de Provence, Marseille, in cooperation with IFIP Working Group 10.2. Formal verification is emerging as a plausible alternative to exhaustive simulation for establishing correct digital hardware designs. The validation of functional and timing behavior is a major bottleneck in current VLSI design systems, slowing the arrival of products in the marketplace with its associated increase in cost. From being a predominantly academic area of study until a few years ago, formal design and verification techniques are now beginning to migrate into industrial use. As we are now witnessing an increase in activity in this area in both academia and industry, the aim of this working conference was to bring together researchers and users from both communities.

FGCS '92

FGCS '92
Author:
Publisher: IOS Press
Total Pages: 788
Release: 1992
Genre: Computer architecture
ISBN: 9784274077241

FME '93: Industrial-Strength Formal Methods

FME '93: Industrial-Strength Formal Methods
Author: Jim Woodcock
Publisher: Springer Science & Business Media
Total Pages: 712
Release: 1993
Genre: Business & Economics
ISBN: 9783540566625

The last few years have borne witness to a remarkable diversity of formal methods, with applications to sequential and concurrent software, to real-time and reactive systems, and to hardware design. In that time, many theoretical problems have been tackled and solved, and many continue to be worked upon. Yet it is by the suitability of their industrial application and the extent of their usage that formal methods will ultimately be judged. This volume presents the proceedings of the first international symposium of Formal Methods Europe, FME'93. The symposium focuses on the application of industrial-strength formal methods. Authors address the difficulties of scaling their techniques up to industrial-sized problems, and their suitability in the workplace, and discuss techniques that are formal (that is, they have a mathematical basis) and that are industrially applicable. The volume has four parts: - Invited lectures, containing a lecture by Cliff B. Jones and a lecture by Antonio Cau and Willem-Paul de Roever; - Industrial usage reports, containing 6 reports; - Papers, containing 32 selected and refereedpapers; - Tool descriptions, containing 11 descriptions.

Advances in Spatial Databases

Advances in Spatial Databases
Author: David Abel
Publisher: Springer Science & Business Media
Total Pages: 552
Release: 1993-06-07
Genre: Computers
ISBN: 9783540568698

The Third International Symposium on Large Spatial Databases (SSD '93) was held at the National University of Singapore in June 1993. The previous meetings of the series were at Sanata Barbara (1989) and Zurich (1991). The meetings are planned as a forum for researchers and practitioners specializing in database theory for and advanced applications of Spatial Information Systems. This volume constitutes the proceedings of the symposium. It contains 25 selected papersand three keynotes papers: "Spatial data management in database systems: research directions" (W. Kim), "From extensible databases to interoperability between multiple databases and GIS applications" (H.-J. Schek), and "The SEQUOIA 2000 project" (M. Stonebraker). The selectedpapers are collected into sections on: data modeling, spatial indexing, indexing mechanisms, handling of raster and vector data, spatial database systems, topology, storage management, query retrieval,knowledge engineering in SDS, and 3-dimensional data handling.

Logics for Databases and Information Systems

Logics for Databases and Information Systems
Author: Jan Chomicki
Publisher: Springer Science & Business Media
Total Pages: 442
Release: 2012-12-06
Genre: Computers
ISBN: 1461556430

Time is ubiquitous in information systems. Almost every enterprise faces the problem of its data becoming out of date. However, such data is often valu able, so it should be archived and some means to access it should be provided. Also, some data may be inherently historical, e.g., medical, cadastral, or ju dicial records. Temporal databases provide a uniform and systematic way of dealing with historical data. Many languages have been proposed for tem poral databases, among others temporal logic. Temporal logic combines ab stract, formal semantics with the amenability to efficient implementation. This chapter shows how temporal logic can be used in temporal database applica tions. Rather than presenting new results, we report on recent developments and survey the field in a systematic way using a unified formal framework [GHR94; Ch094]. The handbook [GHR94] is a comprehensive reference on mathematical foundations of temporal logic. In this chapter we study how temporal logic is used as a query and integrity constraint language. Consequently, model-theoretic notions, particularly for mula satisfaction, are of primary interest. Axiomatic systems and proof meth ods for temporal logic [GHR94] have found so far relatively few applications in the context of information systems. Moreover, one needs to bear in mind that for the standard linearly-ordered time domains temporal logic is not re cursively axiomatizable [GHR94]' so recursive axiomatizations are by necessity incomplete.

Extensions of Logic Programming

Extensions of Logic Programming
Author: Evelina Lamma
Publisher: Springer Science & Business Media
Total Pages: 436
Release: 1993-02-12
Genre: Computers
ISBN: 9783540564546

This book contains papers which investigate how to extend logic programming toward the artificial intelligence and software engineering areas, covering both theoretical and practical aspects. Some papers investigate topics such as abductive reasoning and negation. Some works discuss how to enhance the expressive power of logic programming by introducing constraints, sets, and integration with functional programming. Other papers deal with the structuring of knowledge into modules, taxonomies, and objects, withthe aim of extending logic programming toward software engineering applications. A section is devoted to papers concentrating on proof theory and inspired by Gentzen-style sequent or natural deduction systems. Topics such as concurrency are considered to enhance the expressive power of logic languages. Finally, some papers mainly concernimplementation techniques for some of these logic programming extensions.

Program Development by Specification and Transformation

Program Development by Specification and Transformation
Author: Bernd Krieg-Brückner
Publisher: Springer Science & Business Media
Total Pages: 650
Release: 1993-08-30
Genre: Computers
ISBN: 9783540567332

This volume gives a coherent presentation of the outcome of the project PROSPECTRA (PROgram development by SPECification and TRAnsformation) that aims to provide a rigorous methodology for developing correct software and a comprehensive support system. The results are substantial: a theoretically well-founded methodology covering the whole development cycle, a very high-level specification and transformation language family allowing meta-program development and formalization of the development process itself, and a prototype development system supporting structure editing, incremental static-semantic checking, interactive context-sensitivetransformation and verification, development of transformation (meta-) programs, version management, and so on, with an initial libraryof specifications and a sizeable collection of implemented transformations. The intended audience for this documentation is the academic community working in this and related areas and those members of the industrial community interested in the use of formal methods.

Ray Shooting, Depth Orders and Hidden Surface Removal

Ray Shooting, Depth Orders and Hidden Surface Removal
Author: Mark de Berg
Publisher: Springer Science & Business Media
Total Pages: 220
Release: 1993-08-30
Genre: Computers
ISBN: 9783540570202

Computational geometry is the part of theoretical computer science that concerns itself with geometrical objects; it aims to define efficient algorithms for problems involving points, lines, polygons, and so on. The field has gained popularity very rapidly during the last decade. This is partly due to the many application areas of computational geometry and partly due to the beauty of the field itself. This monograph focuses on three problems that arise in three-dimensional computational geometry. The first problem is the ray shooting problem: preprocess a set of polyhedra into a data structure such that the first polyhedron that is hit by a query ray can be determined quickly. The second problem is that of computing depth orders: we want to sort a set of polyhedra such thatif one polyhedron is (partially) obscured by another polyhedron then it comes first in the order. The third problem is the hidden surface removal problem: given a set of polyhedra and a view point, compute which parts of the polyhedra are visible from the view point. These three problems involve issues that are fundamental to three-dimensional computational geometry. The book also contains a large introductory part discussing the techniques used to tackle the problems. This part should interest not only those who need the background for the rest of the book but also anyone who wants to know more about some recent techniques in computational geometry.