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Modeling past, current, and future time in medical databases

V Kouramajian, J Fowler
1994 Proceedings. Symposium on Computer Applications in Medical Care  
Finally, bitemporal extensions are presented for database query languages in order to provide natural high-level operators for bitemporal query expressions.  ...  This model permits the characterization of temporal properties of entities, relationships, and attributes.  ...  We extend the Extended Entity-Relationship (EER) model by using bitemporal lifespans, and we introduce a natural temporal query language over bitemporal regions.  ... 
pmid:7949941 pmcid:PMC2247737 fatcat:dgmmsxp3mbdmxlbtuwuftoiyiu

XBiT: An XML-Based Bitemporal Data Model [chapter]

Fusheng Wang, Carlo Zaniolo
2004 Lecture Notes in Computer Science  
Past research work on modelling and managing temporal information has, so far, failed to elicit support in commercial database systems.  ...  This is the important conclusion claimed in this paper where we show that valid-time, transaction-time, and bitemporal databases can be naturally viewed in XML using temporally-grouped data models; then  ...  Temporal Databases A body of previous work on temporal data models and query languages include [22] [23] [24] [25] ; thus the design space for the relational data model has been exhaustively explored  ... 
doi:10.1007/978-3-540-30464-7_60 fatcat:di5fzp734zdwfkjilsi2lnzbye

Conceptual modelling of database applications using an extended ER model

Gregor Engels, Martin Gogolla, Uwe Hohenstein, Klaus Hülsmann, Perdita Löhr-Richter, Gunter Saake, Hans-Dieter Ehrich
1992 Data & Knowledge Engineering  
The central link for integrating these design components is a descriptive logic-based query language for the EER model.  ...  A temporal extension of this logic is the specification language for temporal integrity constraints.  ...  Acknowledgements We like to thank our (former) colleagues Leonore Neugebauer, Karl Neumann and Udo Lipeck for their contributions to the presented modelling approach and the students currently or formerly  ... 
doi:10.1016/0169-023x(92)90008-y fatcat:ggc6eju4fzgvfam7pwefgbcrrm

A Temporal Description Logic for Reasoning over Conceptual Schemas and Queries [chapter]

Alessandro Artale, Enrico Franconi, Frank Wolter, Michael Zakharyaschev
2002 Lecture Notes in Computer Science  
DLR is not only a very powerful language for conceptual modelling. The problem of view-based query processing under DLR constraints has also been studied [9] .  ...  This paper introduces a new logical formalism, intended for temporal conceptual modelling, as a natural combination of the well-known description logic DLR and point-based linear temporal logic with Since  ...  For the non-temporal EER model, such an encoding, introduced by [10, 11] , establishes a precise correspondence between legal database states of the EER diagram and models of the derived DLR theory.  ... 
doi:10.1007/3-540-45757-7_9 fatcat:4vgmyrocprg5tfcxebna63xny4

Page 76 of Library & Information Science Abstracts Vol. , Issue 4 [page]

1995 Library & Information Science Abstracts  
A query language for the TOS, called Temporal Object Query Language (TOQL), is also proposed which is a super-set of the relational query language SQL.  ...  Compares object oriented query language (OQL) and relational query language (SQL) for novice users.  ... 

On Using Conceptual Modeling for Ontologies [chapter]

S. Spaccapietra, C. Parent, C. Vangenot, N. Cullot
2004 Lecture Notes in Computer Science  
Are database concepts and techniques suitable for ontology design and management? The question has been on the floor for some time already.  ...  It concludes suggesting a hybrid approach, combining databases and logic-based services. 1  ...  Database systems usually provide powerful assertional query languages, complemented with efficient query optimization tools.  ... 
doi:10.1007/978-3-540-30481-4_3 fatcat:3rbtjioij5cf3l4b4orbfdt53m

Ontology-Driven Formal Conceptual Data Modeling for Biological Data Analysis [chapter]

Catharina Maria Keet
2013 Biological Knowledge Discovery Handbook  
the generic common conceptual data modeling language CMcom, i.e., with syntax and (model-theoretic) semantics, and a mapping between the two The base language: DLR Take atomic relations (P) and atomic  ...  ) Language extensions for, a.o., temporal knowledge; demonstrated with related processes in a cascade of reactions Automated reasoning services were illustrated for taxonomic classification Three different  ...  Thank you for your attention C. Maria Keet Ontology-driven formal conceptual data modelling  ... 
doi:10.1002/9781118617151.ch06 fatcat:domdttjm7bcvljg2agxejkdb6m

Temporal entity-relationship models-a survey

H. Gregersen, C.S. Jensen
1999 IEEE Transactions on Knowledge and Data Engineering  
It is the rst paper to provide a comprehensive o verview of temporal ER modeling, and it thus meets a need for consolidating and providing easy access to the research in temporal ER modeling.  ...  As a result, how to enable the ER model to properly capture time-varying information has for a decade and a half been an active area of the database research community.  ...  A temporal extension of the query language GORDAS is provided as query language for the models TEER and STEER. The ERT model is provides with a query language called the External Rule Language.  ... 
doi:10.1109/69.774104 fatcat:kmj42o2e7zgxxmfn5ct7l42oae

A Visual Interface for Multivariate Temporal Data: Finding Patterns of Events across Multiple Histories

Jerry Fails, Amy Karlson, Layla Shahamat, Ben Shneiderman
2006 2006 IEEE Symposium On Visual Analytics And Technology  
This paper presents PatternFinder, an integrated interface for visual query and result-set visualization for search and discovery of temporal patterns within multivariate and categorical data sets.  ...  Pattern Finder's query capabilities together with coupled ball-andchain and tabular visualizations enable users to effectively query, explore and analyze event patterns both within and across data entities  ...  Although both QBE-EER and hybrid approaches support queries over temporal events using a visual, direct-manipulation language, the temporal operators are an extension to a generalpurpose database query  ... 
doi:10.1109/vast.2006.261421 dblp:conf/ieeevast/FailsKSS06 fatcat:pngapxnglrfqdllpo5pwluucym

Literature survey of temporal data models

2017 International Journal of Latest Trends in Engineering and Technology  
It endorse the storage and retrieval of data using a query language, TOSQL.  ...  Segev's[14] model explored it more as time sequences. Designed temporal model, which incorporates HQuel, calculus based query language and time-by-example language.  ... 
doi:10.21172/1.841.47 fatcat:odbedlm2zrabrkqf3xnjroei5q

A Survey on Visual Query Systems in the Web Era (extended version) [article]

Jorge Lloret-Gazo
2017 arXiv   pre-print
One solution is the so called Visual Query Systems (VQS) where queries are represented visually and users do not have to understand query languages such as SQL or XQuery.  ...  In 1996, a paper by Catarci reviewed the Visual Query Systems available until that year.  ...  In this environment, the data model is called Temporal Graph Model(TGM) and has a set of Temporal Graphical Primitives(TGPs).  ... 
arXiv:1708.00192v1 fatcat:bdg2tuubzbd6rp5hpwoxge2eey

The Enhanced Entity-Relationship Model [chapter]

Bernhard Thalheim
2011 Handbook of Conceptual Modeling  
The enhanced or extended ER (EER) model might, for instance, use the following assumptions: Set semantics: The default semantics of entity and relationship types are set semantics.  ...  Each language used should be based on a clear definition of structure, semantics, operations, behavior and environment. At the same time, languages presuppose implicit assumptions and constraints.  ...  A EER query for which the schema S q consists of a singleton atomic attributes and base type is called singleton-value query.  ... 
doi:10.1007/978-3-642-15865-0_6 fatcat:2qqwrexbxfhmza3veue55zm35a

Automated Reasoning on Conceptual Schemas (Dagstuhl Seminar 13211)

Diego Calvanese, Sven Hartmann, Ernest Teniente, Marc Herbstritt
2013 Dagstuhl Reports  
(iii) Are the existing techniques and tools ready to be used in an industrial environment? (iv) Which are the new challenges for automated reasoning on conceptual schemas?  ...  ., during requirements specification and conceptual modeling since errors introduced at these stages are usually much more expensive to correct than errors made during design or implementation.  ...  We also point to extensions of DCDSs with a semantic level, allowing one to capture properties at a higher level of abstraction, and taking into account semantic constraints during verification.  ... 
doi:10.4230/dagrep.3.5.43 dblp:journals/dagstuhl-reports/CalvaneseHT13 fatcat:72r64rrndvf43imr5jxoyqs3kq

Investigating the Use of Mixed-Units Based Modeling for Improving Uyghur Speech Recognition

Pengfei Hu, Shen Huang, Zhiqiang Lv
2018 The 6th Intl. Workshop on Spoken Language Technologies for Under-Resourced Languages  
To effectively capture this information, a feature that can model the long-term temporal context is required.  ...  Language identification (LID) systems, which can model highlevel information such as phonotactics have exhibited superior performance.  ...  Acknowledgements The authors would like to thank Science & Engineering Research Board (SERB) for funding Language Identification in Practical Environments (YSS/2014/000933) project.  ... 
doi:10.21437/sltu.2018-44 dblp:conf/sltu/VuddagiriVV18 fatcat:3cay4ttrrrboripxosg5tr4kia

Co-evolution Model for Data Sources and Views

Alexander Dolnik, Sergei Syntulskiy
2008 Spring Young Researchers Colloquium on Databases and Information Systems  
A model-driven approach to templates and ETL process evolution problem is developed. We suppose that the ETL process evolution problem is mainly a problem of a low abstraction level.  ...  So the definition of ETL process based on a conceptual model is a principal step towards effective ETL evolution.  ...  in detail using aforementioned BNF. • a query q : D × A → V, The next section we will discuss temporal aspects of our model.  ... 
dblp:conf/syrcodis/DolnikS08 fatcat:mvsek7ohezfqpmdldkuzzy62qe
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