Object-Role Modeling (ORM/NIAM)
نویسنده
چکیده
Object-Role Modeling (ORM) is a method for modeling and querying an information system at the conceptual level, and mapping between conceptual and logical (e.g. relational) levels. ORM comes in various flavors, including NIAM (Natural language Information Analysis Method). This article provides an overview of ORM, and notes its advantages over Entity Relationship and traditional Object-Oriented modeling.
منابع مشابه
ORM in Detail
Object-Role Modeling (ORM) is a method for modeling and querying an information system at the conceptual level, and mapping between conceptual and logical (e.g. relational) levels. ORM comes in various flavors, including NIAM (Natural language Information Analysis Method). This article provides an overview of ORM, and notes its advantages over Entity Relationship and traditional Object-Oriented...
متن کاملTowards a Unifying Object Role Modelling Theory
In this article we briefly present the idea of defining a kernel for object role modelling techniques, upon which different drawing styles can be based. We propose such a kernel (the ORM kernel) and define, as a case study, an ER and a NIAM drawing style on top of it. One of the prominent advantages of such a kernel is the possibility to build a CASE-tool supporting multiple methods. Such a CAS...
متن کاملA unifying object role modelling theory
This article presents the idea of defining a kernel for object role modelling techniques, upon which different drawing styles can be based. We propose such a kernel (the ORM kernel) and define, as a case study, an ER and a NIAM drawing style on top of it. One of the prominent advantages of such a kernel is the possibility to build a CASE-tool supporting multiple methods. Such a CASE-tool would ...
متن کاملOn the use of Object-Role Modelling to Model Active Domains
Conceptual modelling methods such as ER (Chen, 1976), EER (Elmasri and Navathe, 1994; Gogolla, 1994), KISS (Kristen, 1994), NIAM (Nijssen and Halpin, 1989), OOSA (Embley, Kurtz, and Woodfield, 1992) and ORM (Halpin, 2001) have traditionally been developed with the aim of providing conceptual models of database structures. More recently, however, such modelling methods have shown their use for m...
متن کاملFrom Information Technologies to Knowledge Technologies?
In spite of the large variety of technological means available today to obtain and share knowledge needed by the progress of our Society, the relation between the knowledge produced and the knowledge required is not sufficiently facilitated. This paper aims to provide a partial answer to this issue. It proposes a NIAM/ORM formalization of exchanges between producers and users of knowledge. The ...
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