Object specialization

Sciore, Edward

doi:10.1145/65935.65936

Cited by 109 publications

(40 citation statements)

References 9 publications

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“…With object specialization [3], a prototype system for multiaspect object representation, and its integration with object-oriented systems are proposed; in it, objects arranged in a hierarchical structure inherit behavior from parents. Since behavior depends on hierarchical setting, each object has different inheritance.…”

Section: Comparison With Related Studiesmentioning

confidence: 99%

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A framework of object migration in multiaspect object-oriented databases

2000

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In databases built on multiaspect models that reflect changing aspects of objects in the real world, an implementation of OM (object migration) is required that supports multiaspect constraints (e.g., static constraints, transition constraints) imposed on aspect sets. With previous research on OM, however, only transition constraints were examined, while static constraints were not. Besides, there was no OM research considering objects with multiple aspects of the same type (defined in the same class). In this study, databases using MAORI (Multi‐Aspect Object‐Oriented Data Model) are considered, and an OM framework is offered to solve the above‐mentioned problems. Control specifications of this OM framework, namely, object schemata that describe static constraints and transition rules that describe transition constraints, are both declarative, thus offering sufficient description performance and modulability. In addition, a control mechanism is provided to prevent occurrence of meaningless or false OM events by means of aspect set forms that can be derived from aspect sets using transition rules while satisfying object schema. © 1999 Scripta Technica, Syst Comp Jpn, 31(1): 81–91, 2000

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Section: Comparison With Related Studiesmentioning

confidence: 99%

“…Updating of databases using multiaspect data models requires the usual objects attribute value update (1) and class definition update (2) as well as an additional update, namely, the objects aspect set update (3). This update (3) is referred to as object migration (OM), reflecting evolution of the objects properties during its lifetime.…”

Section: Introductionmentioning

confidence: 99%

A framework of object migration in multiaspect object-oriented databases

2000

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“…Every object reference is to a particular role, and the behavior of the object depends on which role is being referenced. The role concept has already proven its powerful modeling capabilities in many advanced applications such as office information systems [17,22], semantic modeling [23,27], and manufacturing systems [34]. However, no one has investigated the possibility of modeling the multifaceted and dynamic behavior of multimedia objects using roles.…”

Section: The Problemsmentioning

confidence: 99%

Heterogeneous and Multifaceted Multimedia Objects in DOOR/MM: A Role-Based Approach with Views

Wong

1999

Journal of Parallel and Distributed Computing

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“…In software development and databases, the notion of context appears in the form of views [3,23,49,1,52,41,9], aspects [46], roles [24,50], or even workspaces which are used to support cooperative work [30]. In machine learning, context is treated as environmental information for concept classification [39,37].…”

Section: Introductionmentioning

confidence: 99%

Contextualization as an independent abstraction mechanism for conceptual modeling

Analyti

Theodorakis²,

Spyratos

et al. 2007

Information Systems

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The notion of context appears in computer science, as well as in several other disciplines, in various forms. In this paper, we present a general framework for representing the notion of context in information modeling. First, we define a context as a set of objects, within which each object has a set of names and possibly a reference: the reference of the object is another context which "hides" detailed information about the object. Then, we introduce the possibility of structuring the contents of a context through the traditional abstraction mechanisms, i.e. classification, generalization, and attribution. We show that, depending on the application, our notion of context can be used as an independent abstraction mechanism, either in an alternative or a complementary capacity with respect to the traditional abstraction mechanisms. We also study the interactions between contextualization and the traditional abstraction mechanisms, as well as the constraints that govern such interactions. Finally, we present a theory for contextualized information bases. The theory includes a set of validity constraints, a model theory, as well as a set of sound and complete inference rules. We show that our core theory can be easily extended to support embedding of particular information models in our contextualization framework.

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Object specialization

Cited by 109 publications

References 9 publications

A framework of object migration in multiaspect object-oriented databases

A framework of object migration in multiaspect object-oriented databases

Heterogeneous and Multifaceted Multimedia Objects in DOOR/MM: A Role-Based Approach with Views

Contextualization as an independent abstraction mechanism for conceptual modeling

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