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The TSQL2 Temporal Query Language

Author: Richard T. Snodgrass

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 675

ISBN-13: 1461522897

Temporal databases have been an active research topic for at least fifteen years. During this time, several dozen temporal query languages have been proposed. Many within the temporal database research community perceived that the time had come to consolidate approaches to temporal data models and calculus based query languages, to achieve a consensus query language and associated data model upon which future research can be based. While there were many query language proposals, with a diversity of language and modeling constructs, common themes kept resurfacing. However, the community was quite frag mented, with each research project being based on a particular and different set of assumptions and approaches. Often these assumptions were not germane to the research per se, but were made simply because the research required a data model or query language with certain characteristics, with the partic ular one chosen rather arbitrarily. It would be better in such circumstances for research projects to choose the same language. Unfortunately, no existing language had attracted a following large enough to become the one of choice. In April, 1992 Richard Snodgrass circulated a white paper that proposed that a temporal extension to SQL be produced by the research community. Shortly thereafter, the temporal database community organized the "ARPA/NSF In ternational Workshop on an Infrastructure for Temporal Databases," which was held in Arlington, TX, in June, 1993.

The Tsql2 Temporal Query Language

Author: Richard T Snodgrass

Publisher:

Published: 1995-08-31

Total Pages: 704

ISBN-13: 9781461522904

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Valid-time Selection and Projection in TSQL2

Author: Christian S. Jensen

Publisher:

Published: 1994

Total Pages: 36

ISBN-13:

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Abstract: "Temporal databases have now been studied for more than a decade. During that period of time, numerous query languages have been proposed for temporal databases. One of the essential components of a temporal query language is valid-time selection, which allows the user to retrieve tuples according to their valid-time relationship. Often, this component is closely tied to another important component, valid-time projection, which defines the timestamps of the tuples in query results. Here, nine different temporal query languages, primarily SQL and QUEL extensions, are examined with a focus on valid-time selection and projection. Based on that survey, the specific design of the valid-time selection and projection components of the consensus temporal query language TSQL2 are presented."

Temporal Databases

Author: Dr. Kamran Ahsan & Prativadi Vijay

Publisher: Booktango

Published: 2014-06-17

Total Pages: 127

ISBN-13: 1468948210

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Need for database reasonably increased as the data manipulation changes and leverage for storage has become essential. Temporal database has been one of the special kinds in the field of database. According to the concept of time, stamping various models has emerged and temporal models namely; McKenzie, BenZvi’s, and non-temporal models namely; Colby, Deshpande and Larson’s model has grabbed unique attention towards in this area of temporal database. Reliable and Enhanced stratum middleware management capabilities enable the temporal queries for ease in transactions. Richness in point based and maximum timestamp approaches provide high indexing mechanisms, which make efficient storage of data in tree structure format. The proposed prototype model uses Temporal Relational Algebra and TSQL2 declarative language, which display the past, present and future related data. The inclusion of T4SQL instead of TSQL2, Temporal Multi-Secure Database and spatio-temporal database model can make this model stronger than present and make it work more efficiently.

Temporal Databases: Research and Practice

Author: Opher Etzion

Publisher: Springer Science & Business Media

Published: 1998-05-13

Total Pages: 456

ISBN-13: 9783540645191

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This is an introductory text to the science of neurobiology, describing animal nervous systems, what they consist of, how they work, and how they are studied. Unlike many other neurobiology texts, considerable discussion is given to both human and non-human nervous systems. Written in an easy-to-read style, it will be useful for both biology and medical students. It provides the opportunity for self-testing at the end of each chapter, with objectives and questions. A CD-ROM entitled 'The Human Brain' (ISBN 3-540-14666-0) has been produced to accompany this text, and can be purchased either separately or together with the book (ISBN 3-540-63778-8).

Recent Advances in Temporal Databases

Author: James Clifford

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 361

ISBN-13: 1447130332

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The International Workshop on Temporal Databases held in Zurich, Switzerland, 17-18 September 1995 brought together researchers from academic and industrial institutions with database practitioners interested in keeping up with the state-of-the-art developments in the management of temporal data. A previous workshop in Arlington, Texas in June 1993 focused on the development of an infrastructure that would spur the development of commercial implementations of many of the generally agreed-upon features of temporal database management that have emerged from the temporal database research community over more than a decade of research. This ARP AlNSF-sponsored Arlington workshop saw the formation of the TSQL2 Language Design Committee, which led to the development of the recently completed TSQL2 Language Specification, and also created a "consensus" glossary of temporal database terminology and a test suite of temporal database queries. The Zurich workshop was conceived from the outset to be universal in scope, and international in participation. The Call for Papers sought to evoke the highest quality and most up-to-date temporal database research from around the world. Mindful of the important work accomplished by the previous workshop, the Call also specifically sought out research papers and panels that would comment and build upon the widely publicized results from Arlington. These proceedings contain the papers that were selected for presentation at the International Workshop, on Temporal Databases held in Zurich, Switzerland on 17-18 September 1995.

Time and Relational Theory

Author: C.J. Date

Publisher: Morgan Kaufmann

Published: 2014-08-13

Total Pages: 579

ISBN-13: 0128006757

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Time and Relational Theory provides an in-depth description of temporal database systems, which provide special facilities for storing, querying, and updating historical and future data. Traditionally, database management systems provide little or no special support for temporal data at all. This situation is changing because: Cheap storage enables retention of large volumes of historical data in data warehouses Users are now faced with temporal data problems, and need solutions Temporal features have recently been incorporated into the SQL standard, and vendors have begun to add temporal support to their DBMS products Based on the groundbreaking text Temporal Data & the Relational Model (Morgan Kaufmann, 2002) and new research led by the authors, Time and Relational Theory is the only book to offer a complete overview of the functionality of a temporal DBMS. Expert authors Nikos Lorentzos, Hugh Darwen, and Chris Date describe an approach to temporal database management that is firmly rooted in classical relational theory and will stand the test of time. This book covers the SQL:2011 temporal extensions in depth and identifies and discusses the temporal functionality still missing from SQL. Understand how the relational model provides an ideal basis for taming the complexities of temporal databases Learn how to analyze and evaluate commercial temporal products with this timely and important information Be able to use sound principles in designing and using temporal databases Understand the temporal support recently added to SQL with coverage of the new SQL features in this unique, accurate, and authoritative reference Appreciate the benefits of a truly relational approach to the problem with this clear, user friendly presentation

Business Intelligence and Big Data

Author: Esteban Zimányi

Publisher: Springer

Published: 2018-07-14

Total Pages: 155

ISBN-13: 3319966553

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This book constitutes revised tutorial lectures of the 7th European Business Intelligence and Big Data Summer School, eBISS 2017, held in Bruxelles, Belgium, in July 2017. The tutorials were given by renowned experts and covered advanced aspects of business intelligence and big data. This summer school, presented by leading researchers in the field, represented an opportunity for postgraduate students to equip themselves with the theoretical, practical, and collaboration skills necessary for developing challenging business intelligence applications.

Deductive and Object-Oriented Databases

Author: Francois Bry

Publisher: Springer Science & Business Media

Published: 1997-11-12

Total Pages: 452

ISBN-13: 9783540637929

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This book constitutes the refereed proceedings of the 5th International Conference on Deductive and Object-Oriented Databases, DOOD'97, held in Montreux, Switzerland, in December 1997. The 22 revised full papers presented in this book were selected from a total of 59 submissions. Also included are abstracts or full versions of three invited talks and three tutorials and six short presentations. The papers are organized in topical sections on materialized view maintenance, extending DBMs features, database updates, managing change in object databases, semantics of active databases, formal semantics, and new directions.

Temporal Databases

Author: Abdullah Uz Tansel

Publisher: Benjamin-Cummings Publishing Company

Published: 1993

Total Pages: 664

ISBN-13:

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Organized into four parts: extensions to the relational data model, other data models, implementation, and general language and other issues in temporal databases. Each part gives an introduction to research in the area. Authors discuss topics of current interest and the results of their recent research. Many examples and figures. Contains a glossary of concepts and an extensive bibliography. No index. Annotation copyright by Book News, Inc., Portland, OR