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Implementing Temporal Databases in Object-Oriented Systems

A. Steiner, M. C. Norrie
1997 Database Systems for Advanced Applications '97  
We present a temporal object data model, query language and system that support temporal database applications.  ...  A comparison of the two resulting systems highlights the current limitations to the notions of extensibility supported in existing OODBMS.  ...  A Temporal Object Model In this section, we present the temporal object data model TOM and a system based on this model.  ... 
doi:10.1142/9789812819536_0040 fatcat:vwxiclhkkrayndd24ddjn5jkyy

Temporal data management

C.S. Jensen, R.T. Snodgrass
1999 IEEE Transactions on Knowledge and Data Engineering  
Any software made available via TIMECENTER is provided "as is" and without any express or implied warranties, including, without limitation, the implied warranty of merchantability and fitness for a particular  ...  Early query languages were based on the relational algebra. Calculus-based, Datalog-based, and object-oriented temporal query languages appeared later.  ...  Building on the example introduced in Section 3, Figure 3 illustrates a conventional ER diagram for video rentals. The research on temporal ER modeling is well motivated.  ... 
doi:10.1109/69.755613 fatcat:szrejezr3rg4xecukahc7ufh6a

T-Araneus: Management of Temporal Data-Intensive Web Sites [chapter]

Paolo Atzeni, Pierluigi Del Nostro
2004 Lecture Notes in Computer Science  
It builds on previous experiences in the management of data-intensive Web-sites, and is based on the use of high level models throughout the design process.  ...  The main feature is the adoption of a logical model for temporal Web sites, T-ADM, which allows the definition of page-schemes with temporal aspects (which could be related to the page as a whole or to  ...  [3] , which both propose logical models in a sort of traditional database sense, and Fernandez et al [4] , which instead propose an approach based on semistructured data.  ... 
doi:10.1007/978-3-540-24741-8_59 fatcat:zliqxg2sdrfy7eg2r52yeushnq

A General Approach to Represent and Query Now-Relative Medical Data in Relational Databases [chapter]

Luca Anselma, Luca Piovesan, Abdul Sattar, Bela Stantic, Paolo Terenziani
2015 Lecture Notes in Computer Science  
Now-related temporal data play an important role in the medical context.  ...  changes are recorded in the database is exactly known, and (ii) do not explicitly provide an extended relational algebra to query now-related data.  ...  Relational Algebra Our representation models temporal indeterminacy in a compact and implicit way. and Musen's intervals of uncertainty [4] ).  ... 
doi:10.1007/978-3-319-19551-3_41 fatcat:kl7vhg5nejg7fog43igfp7tcsq

A Comprehensive Approach to 'Now' in Temporal Relational Databases: Semantics and Representation

Luca Anselma, Luca Piovesan, Abdul Sattar, Bela Stantic, Paolo Terenziani
2016 IEEE Transactions on Knowledge and Data Engineering  
We propose the first integrated approach that provides both a neat semantics for now-related data and a compact 1NF representation (data model and relational algebra) for them.  ...  Additionally, the definition of a relational algebra to query now-related data is an open problem.  ...  Clifford et al. do not devise any algebra coping with such a data model.  ... 
doi:10.1109/tkde.2016.2588490 fatcat:jbb3dl2nvradnfxqqfrbrkrpry

TEMPORAL GIS AND SPATIOTEMPORAL DATA SOURCES

Karine Reis Ferreira, André Gomes de Oliveira, Antônio Miguel Vieira Monteiro, Diego Benincasa F. C. de Almeida
2018 Revista Brasileira de Cartografia  
Our approach uses Semantic Web techniques and is based on a data model that takes observations as basic units to represent spatiotemporal information from different application domains.  ...  We define a RDF vocabulary for describing data sources that store or provide spatiotemporal observations.  ...  Events are occurrents (GALTON & MIZOGUCHI, 2009 Our proposal: An Observation-Based Model for Spatiotemporal Data We proposed a data model for spatiotemporal data and specifi ed it using an algebraic  ... 
doaj:9a44ce960550425e873f5ff5e73470b0 fatcat:mjdguckzgvcozd3ad7hydvduty

A 1NF temporal relational model and algebra coping with valid-time temporal indeterminacy

Luca Anselma, Luca Piovesan, Paolo Terenziani
2015 Journal of Intelligent Information Systems  
In particular, we present a 1NF temporal relational model and propose a new temporal algebra to query it.  ...  We also formally study the properties of the new data model and algebra, thus granting that our approach is interoperable with pre-existent temporal and non-temporal relational approaches, and is implementable  ...  Snodgrass, for many enlightening suggestions and invaluable support he gave us in the preliminary stages of this work.  ... 
doi:10.1007/s10844-015-0367-2 fatcat:ejr65o66p5h7dndwoj5b3tbl2y

Algebra-to-SQL Query Translation for Spatio-Temporal Databases [chapter]

Mohammed Minout, Esteban Zimányi
2004 Lecture Notes in Computer Science  
Although many spatio-temporal conceptual models has been proposed in the last years, users must express their queries on the underlying physical data structures.  ...  In this paper we describe the Query Translator module that is in charge of transforming the queries expressed for the conceptual schema into an operational query for a target DBMS or GIS (e.g., an SQL  ...  This two-step strategy allows to reuse most of the code when adding a new target data model.  ... 
doi:10.1007/978-3-540-30075-5_87 fatcat:xguknazdhfbvvadjez76uuf5cu

Reconciling point-based and interval-based semantics in temporal relational databases: a treatment of the telic/atelic distinction

P. Terenziani, R.T. Snodgrass
2004 IEEE Transactions on Knowledge and Data Engineering  
Although many different algebrae and models have been proposed, almost all of them are based on a point-based (snapshot) semantics for data.  ...  We then introduce a three-sorted temporal model and algebra including coercion functions for transforming relations of one sort into relations of the other at query time which properly copes with these  ...  Jensen for stimulating discussions. US National Science Foundation grants IIS-0100436 and EIA-008013 provided partial support of this research.  ... 
doi:10.1109/tkde.2004.1277816 fatcat:gutirznfdrduplkjih7k44dvqu

Towards the Managment of Time in Data-Intensive Web Sites [chapter]

Paolo Atzeni, Pierluigi Del Nostro
2004 Lecture Notes in Computer Science  
The adoption of a logical model for temporal, data-intensive Web sites is proposed together with a methodology for the development.  ...  The model allows the definition of page-schemes with temporal aspects (which could be related to the page as a whole or to individual components of it).  ...  [2] , which both propose logical models in a sort of traditional database sense and a model-based development for data intensive Web sites.  ... 
doi:10.1007/978-3-540-30466-1_36 fatcat:sgqkpgmcc5appmn7av7ja63qbm

Towards an infrastructure for temporal databases

Niki Pissinou, Richard Thomas Snodgrass, Ramez Elmasri, Inderpal S. Mumick, Tamer Özsu, Barbara Pernici, Arie Segev, Babis Theodoulidis, Umeshwar Dayal
1994 SIGMOD record  
Current Status of the Field Temporal 0 b ject Based Modeling The two most prominent models that provided the basis for the development of tempora.1 conceptual models are the entity-relationship (ER)  ...  An important issue, rising from the isolation of the three approa.ches for next generation temporal data. modeling proposed in Section 4.2, concerns the role of a temporal data model.  ...  Baseline Architecture A second goal was to identify a suitable model, or models, for representing temporal databases a.t the storage level.  ... 
doi:10.1145/181550.181557 fatcat:r3hqjgabajevzfuar6r27klkwu

Chorochronos

Andrew Frank, Hans-Jörg Schek, Michel Scholl, Timos Sellis, Babis Theodoulidis, Peter Widmayer, Stephane Grumbach, Ralf Hartmut Güting, Christian S. Jensen, Manolis Koubarakis, Nikos Lorentzos, Yannis Manolopoulos (+2 others)
1999 SIGMOD record  
Simply connecting a spatial data model to a temporal data model will result in a temporal data model that may capture spatial data, or in a spatial data model that may capture timereferenced sequences  ...  In SOS, one can define a "logical" DBMS data model and a query algebra, a representation model with a query plan algebra ("physical algebra"), and optimization rules to translate from the former to the  ... 
doi:10.1145/333607.333609 fatcat:jguia6jvvzbexj4zpe574bdiyu

CHOROCHRONOS - Research on Spatio-temporal Database Systems [chapter]

Timos Sellis
1999 Lecture Notes in Computer Science  
Spatiotemporal database management systems can become an enabling technology for important applications such as Geographic Information Systems (GIS), environmental information systems, and multimedia.  ...  In this paper we address research issues in spatiotemporal databases, by providing an analysis of the challenges set, the problems encountered, as well as the proposed solutions and the envisioned research  ...  Acknowledgement The research presented has been performed under the project "CHOROCHRONOS: A Research Network for Spatiotemporal Database Systems", contract number ERBFMRX-CT96-0056, which is sponsored  ... 
doi:10.1007/3-540-46621-5_18 fatcat:62t5ag3mz5bx5prl6fgl6frh3a

Restricted natural language based querying of clinical databases

Leila Safari, Jon D. Patrick
2014 Journal of Biomedical Informatics  
Also a two layer rule-based method is used to interpret the temporal expressions of the query, based on the proposed temporal model.  ...  it is only implemented for ER and EAV design models in the current work.  ...  Acknowledgments We would like to give a special thanks to Dr. Stephen Crawshaw for the proof reading of this paper and also to Yuzhong Cheng for the initial work on CliniDAL.  ... 
doi:10.1016/j.jbi.2014.07.012 pmid:25051402 fatcat:tfjulgkmjbbfdkcq4f6y3baazm

CHOROCHRONOS: research on spatiotemporal database systems

T. Sellis
1999 Proceedings. Tenth International Workshop on Database and Expert Systems Applications. DEXA 99  
Spatiotemporal database management systems can become an enabling technology for important applications such as Geographic Information Systems (GIS), environmental information systems, and multimedia.  ...  In this paper we address research issues in spatiotemporal databases, by providing an analysis of the challenges set, the problems encountered, as well as the proposed solutions and the envisioned research  ...  Acknowledgement The research presented has been performed under the project "CHOROCHRONOS: A Research Network for Spatiotemporal Database Systems", contract number ERBFMRX-CT96-0056, which is sponsored  ... 
doi:10.1109/dexa.1999.795207 dblp:conf/dexaw/Sellis99 fatcat:knxclu2szvbgfalscewfksiwly
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