Results 1 - 10
of
11
Reverse Engineering Relational Schemas to Object-Oriented Schemas
, 1996
"... Due to the wide use of object-oriented technology in software development, reverse engineering of relational schemas to object-oriented schemas is gaining a lot of interest. One of the major problems with existing approaches for this schema mapping is the extensive amount of information that must be ..."
Abstract
-
Cited by 6 (0 self)
- Add to MetaCart
Due to the wide use of object-oriented technology in software development, reverse engineering of relational schemas to object-oriented schemas is gaining a lot of interest. One of the major problems with existing approaches for this schema mapping is the extensive amount of information that must be gathered either automatically or from the user. This paper presents an object-centered approach (as opposed to other relation-centered approaches) for doing the schema mapping. The procedure maps a 3NF relational schema into an object-oriented schema without the explicit use of inclusion dependencies and provides a greater scope for automation.
Layered Implementation of Temporal DBMSs - Concepts and Techniques
, 1997
"... A wide range of database applications manage time-varying data. Examples include, e.g., accounting, personnel, schedule, and data warehousing applications. At the same time, it is well-known that querying and correctly updating time-varying data is difficult and error-prone when using standard SQL. ..."
Abstract
-
Cited by 6 (4 self)
- Add to MetaCart
A wide range of database applications manage time-varying data. Examples include, e.g., accounting, personnel, schedule, and data warehousing applications. At the same time, it is well-known that querying and correctly updating time-varying data is difficult and error-prone when using standard SQL. As a result of a decade of intensive exploration, temporal extensions of SQL have reached a level of maturity and sophistication where it is clear that they offer substantial benefits over SQL when managing time-varying data. The topic of this paper is the effective implementation of temporally extended SQL's. Traditionally, it has been assumed that a temporal DBMS must be built from scratch, utilizing new technologies for storage, indexing, query optimization, concurrency control, and recovery. This paper adopts a quite different approach. Specifically, it explores the concepts and techniques involved in implementing a temporally enhanced SQL while maximally reusing the facilities of an exi...
Persistence in Distributed Object Systems: ORB/ODBMS Integration
- University of New Mexico
, 1996
"... This dissertation discusses the realization of object persistence, in a CORBA-based distributed system, through the integration of the Object Request Broker (ORB) with an Object Database Management Systems (ODBMS). Three approaches to persistence of CORBA objects are described. The first one, pseudo ..."
Abstract
-
Cited by 4 (1 self)
- Add to MetaCart
(Show Context)
This dissertation discusses the realization of object persistence, in a CORBA-based distributed system, through the integration of the Object Request Broker (ORB) with an Object Database Management Systems (ODBMS). Three approaches to persistence of CORBA objects are described. The first one, pseudopersistence, makes object references persistent, but not transparently storable. The others, smart pointerbased persistence and virtual persistence, provide transparent storability to object references, both in the case of references to local objects and in the case of references to remote objects. We stress the ORB and ODBMS features each approach depends upon, and point out the ones not fully standardized at the present time.
From Relational Data to RDFS Models
- In Proceedings of the International Conference on Web Engineering
, 2004
"... Abstract. A vast amount of information sources is stored as relationallike data and inaccessible to RDFS-based systems. In this paper we describe an approach to integration such information sources with RDFSaware systems. The proposed solution is purely RDFS-based. We use RDF/S as a mechanism to spe ..."
Abstract
-
Cited by 3 (0 self)
- Add to MetaCart
(Show Context)
Abstract. A vast amount of information sources is stored as relationallike data and inaccessible to RDFS-based systems. In this paper we describe an approach to integration such information sources with RDFSaware systems. The proposed solution is purely RDFS-based. We use RDF/S as a mechanism to specify and perform linking of relational data and a predefined domain ontology. The approach is transformation-free, therefore, it completely preserves the original structure of relational data and eliminates the need for a run-time transformation component. This ensures that all the data is accessible and usable in consistence with the original data model. 1
From Ontology-enabled Services to Service-enabled Ontologies
"... ter verkrijging van de graad Doctor aan de Vrije Universiteit Amsterdam, op gezag van de rector magnificus prof.dr. L.M. Bouter, in het openbaar te verdedigen ten overstaan van de promotiecommissie van de faculteit der Exacte Wetenschappen op donderdag 18 juni 2009 om 10.45 uur in de aula van de uni ..."
Abstract
- Add to MetaCart
ter verkrijging van de graad Doctor aan de Vrije Universiteit Amsterdam, op gezag van de rector magnificus prof.dr. L.M. Bouter, in het openbaar te verdedigen ten overstaan van de promotiecommissie van de faculteit der Exacte Wetenschappen op donderdag 18 juni 2009 om 10.45 uur in de aula van de universiteit,
Recommended Citation
, 2003
"... Reasoning about the updatability of XML views over relational databases ..."
