Search Results - "object–role modeling"

Object-Role Modeling: Principles and Benefits by Halpin, Terry

“…Object-Role Modeling (ORM) is an approach for modeling and querying information at the conceptual level, and for transforming ORM models and queries to or from other representations. …”
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Application of the fact-based approach to domain modeling of object-oriented information systems by Nguyen, K., Dillon, Tharam S.

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A Proposal for Folding in ORM Diagrams by Morgan, Tony

“…Object Role Modeling (ORM) can be used to produce conceptual models of any scale. …”
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Fact-Orientation and Conceptual Logic by Halpin, Terry

“…This paper provides a state-of-the-art overview of fact-orientation in general and second-generation Object-Role Modeling (ORM) in particular, highlighting its conceptual and visual support for logic-based modeling, and contrasting it with other data modeling approaches.…”
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Enriched support for ring constraints by Halpin, Terry, Curland, Matthew

“…Fact-oriented modeling approaches such as Object-Role Modeling (ORM) have long supported several varieties of ring constraints, such as irreflexivity, asymmetry, intransitivity, and acyclicity, on pairs of compatible roles. …”
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Modeling of reference schemes by Halpin, Terry

“…This paper provides a critical and comparative review of reference scheme modeling within the Unified Modeling Language (version 2.5), the Barker dialect of Entity Relationship modeling, Object-Role Modeling (version 2), relational database modeling, and the Web Ontology Language (version 2.0). …”
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Enhanced verbalization of ORM models by Curland, Matthew, Halpin, Terry

“…Fact-oriented modeling approaches such as Object-Role Modeling (ORM) validate their models with domain experts by verbalizing the models in natural language, and by populating the relevant fact types with concrete examples. …”
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Formalization of ORM revisited by Halpin, Terry

“…Fact-oriented modeling approaches such as Object-Role Modeling (ORM) and Natural Language Information Analysis Method (NIAM) enable conceptual information models to be expressed using graphical diagrams that may be assigned formal semantics by mapping them onto sets of logical formulae. …”
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Formal Semantics of Dynamic Constraints and Derivation Rules in ORM by Balsters, Herman, Halpin, Terry

“…This paper provides formal semantics for an extension of the Object-Role Modeling approach to support declaration of dynamic rules. …”
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Modeling of Linguistic Reference Schemes by Halpin, Terry

“…This article provides a comparative review of reference scheme modeling within the Unified Modeling Language (version 2.5), the Barker dialect of Entity Relationship modeling, Object-Role Modeling (version 2), relational database modeling, and the Web Ontology Language (version 2.0). …”
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Atomicity and semantic normalization by Carver, Andy, Halpin, Terry

“…This paper contrasts two different approaches to designing relational databases that are free of redundancy. The Object-Role Modeling (ORM) approach captures semantics in terms of atomic (elementary or existential) fact types, before grouping the fact types into relation schemes. …”
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The NORMA software tool for ORM 2 by Curland, Matthew, Halpin, Terry

“…Second generation Object-Role Modeling (ORM 2) is a prime exemplar of fact-orientation, an approach that models the underlying facts of interest in an attribute-free way, using natural sentences to identify objects and the roles they play in relationships. …”
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Structural Aspects of Data Modeling Languages by Halpin, Terry

“…The languages for specifying these models may be graphical or textual, and may be based upon approaches such as Entity Relationship modeling, class diagramming in the Unified Modeling Language, fact orientation (e.g. Object-Role Modeling), Semantic Web modeling (e.g. the Web Ontology Language), or deductive databases (e.g. datalog). …”
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Recent enhancements to ORM by Halpin, Terry, Curland, Matthew

“…Fact-oriented modeling approaches such as Object-Role Modeling (ORM) employ rich graphical notations for capturing business constraints, and validate their data models with domain experts by verbalizing the models in natural language, and by populating the relevant fact types with concrete examples. …”
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Reference scheme reduction on subtypes in ORM by Carver, Andy, Halpin, Terry

“…Object-Role Modeling (ORM) allows composite reference schemes for object types to be portrayed using either objectification (in the sense of situational nominalization) or coreference (as defined in ORM rather than linguistics). …”
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Automated Verbalization of ORM Models in Malay and Mandarin by Lim, Shin Huei, Halpin, Terry

“…Fact-oriented modeling approaches such as Object-Role Modeling (ORM) include a rich graphical notation for capturing business constraints, allowing modelers to visualize fine details of their data models. …”
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Verbalizing ORM models in Malay and Mandarin by Lim, Shin Huei, Halpin, Terry

“…The rich graphical notations provided by fact-oriented modeling approaches such as Object-Role Modeling (ORM) for capturing business constraints assist modelers to visualize fine details of their data models. …”
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Predicate reference and navigation in ORM by Halpin, Terry

“…While the discussion focuses largely on Object-Role Modeling (ORM), many of the issues discussed are also relevant to other fact-oriented approaches, such as Cognition enhanced Natural Information Analysis Method (CogNIAM) and the Semantics of Business Vocabulary and Business Rules approach (SBVR), as well as attribute-based approaches like Entity Relationship modeling and the Unified Modeling Language.…”
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A knowledge-based e-tutorial system based on the ORM model by Leelawatananon, Thanaporn, Chittayasothorn, Suphamit

“…E-learning systems have the potential to reduce operating costs and train more people.Teachers and students do not have to be in the same place at the same time and the students have the opportunity to perform self-studies and self-evaluation using e-tutorial systems.E-learning systems could be considered expert systems in the sense that they provide expert advice in particular subjects of studies to students.The exploitation of knowledge base and knowledge representation techniques is therefore vital to the development of e-learning systems.This paper presents the development of a knowledge-based e-tutorial system that uses the Object Role Model (ORM) as its knowledge representation.The system provides Physics tutorials.It was implemented in Prolog and the knowledge base is on a relational database server.…”
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