scholarly journals Applying TSSL in database schema modeling: Visualizing the syntax of gradual transitions

2018 ◽  
Vol 8 (4) ◽  
pp. 238
Author(s):  
Adi Katz
Keyword(s):  
Instructional Design ◽  
Information Systems ◽  
Cognitive Activity ◽  
Conceptual Modeling ◽  
Database Schema ◽  
Human Computer Interactions ◽  
Database Modeling ◽  
Extraneous Cognitive Load ◽  
Schema Structure ◽  
Modeling Task

Since database conceptual modeling is a complex cognitive activity, finding an appropriate pedagogy to deliver the topic to novice database designers is a challenge for Information Systems (IS) educators. The four-level TSSL model that is known in the area of human-computer interactions (HCI) is used to explain and demonstrate how instructional design can minimize extraneous cognitive load in the conceptual modeling task of designing a database schema. The instructional design approach puts focus on the syntactic level of TSSL, to explain how visualizing gradual transitions between hierarchic levels of the schema is effective in database modeling. The current work demonstrates the approach, and at the next phase we plan to experimentally test the effectiveness of the approach by comparing performance and attitudes of students who are exposed to emphasizing the syntax of the gradual transitions in schema structure to those who are not exposed to it.

Structural Media Types in the Development of Data-Intensive Web Information Systems

2004 ◽  
pp. 34-70 ◽  
Author(s):  
Klaus-Dieter Schewe ◽  
Bernhard Thalheim
Keyword(s):  
Information Systems ◽  
Conceptual Modeling ◽  
User Preferences ◽  
Data Intensive ◽  
Media Type ◽  
Web Information ◽  
Media Objects ◽  
Data Content ◽  
Media Types ◽  
Web Information Systems

In this chapter, a conceptual modeling approach to the design of web information systems (WIS) will be outlined. The notion of media type is central to this approach. Basically, a media type is defined by a view on an underlying database schema, which allows us to transform the data content of a database into a collection of media objects that represent the data content presented at the web interface. The view is extended by operations and an adaptivity mechanism, which permits the splitting of media objects into several smaller units in order to adapt the WIS to different user preferences, technical environments and communication channels. The information entering the design of media types is extracted from a previous story boarding phase. In consecutive phases, media types have to be extended by style patterns as the next step toward implementation.

Conceptual Modeling Process and the Notion of a Concept

2011 ◽  
pp. 53-68
Author(s):  
Pramila Gupta ◽  
James A. Sykes
Keyword(s):  
Information Systems ◽  
Research Work ◽  
Conceptual Modeling ◽  
Sound Theory ◽  
Individual Contributions ◽  
Late Twentieth ◽  
Short Time ◽  
Theory Base ◽  
Universe Of Discourse ◽  
New Millennium

We would like to believe that early in the new millennium the practice of conceptual modeling will rest on a sounder theory base than it does at present. Although a great deal of valuable research in information systems and conceptual modeling has been done during the last twenty years or so, the results in many cases have not yet sufficiently influenced other research work or found their way into current practice. Reasons for this might include the inaccessibility of much of the work and the time pressures on practising analysts. We think that inadequate consolidation of reported results is also a factor. Without consolidation, it is difficult to obtain an overall picture in a short time, and it can be hard to see the value of individual contributions. While it is easy to see the need for consolidation, achieving it is harder. Reviews and surveys can help, but do not by themselves provide the necessary linking of individual research efforts into some larger framework. This chapter draws on theories from philosophy, linguistics, cognitive science, conceptual modeling and information systems in order to develop such a framework. Its goals include improving our understanding of conceptual modeling as a process and relating the different representations of concepts that can occur during conceptual modeling. To illustrate some of its benefits, the framework is applied to the case of object-role modeling in its intended use as a conceptual modeling method and notation at the ontological level of a universe of discourse. The framework is applicable to other modeling methods and notations that may view the universe of discourse at a different level (e.g., epistemological). It assists analysts assessing and working with the techniques that have emerged in the late twentieth century. It provides the sound theory base we need for the new millennium.

scholarly journals GRALD: an Approach for Goal and Risk Analysis in the Development of Information Systems for the Web of Data

2019 ◽  
Vol 7 ◽  
pp. 4
Author(s):  
Marcio Louzada De Freitas ◽  
Renata Silva Souza Guizzardi ◽  
Vítor Estêvão Silva Souza
Keyword(s):  
Information Systems ◽  
Linked Data ◽  
Conceptual Modeling ◽  
Risk Identification ◽  
Domain Ontology ◽  
Intrinsic Activity ◽  
Published Data ◽  
Functional Requirements ◽  
Web Of Data ◽  
The Web

The publication of Linked Data on the Web regarding several application domains leads to new problems related to Requirements Engineering, which needs to take into account aspects related to new ways of developing systems and delivering information integrated with the Web of Data. Tasks such as (functional and non-functional) requirements elicitation and ontology-based conceptual modeling can be applied to the development of systems that publish Linked Data, in order to obtain a better shared conceptualization (i.e., a domain ontology) of the published data. The use of vocabularies is an intrinsic activity when publishing or consuming Linked Data and their choice can be supported by the elicited requirements and domain ontology. However, it is important to assess the risk when choosing external vocabularies, as their use can lead to problems, such as misinterpretation of meanings due to poor documentation, connection timeouts due to infrastructure problems, etc. Thus, risk identification, modeling and analysis techniques can be employed, in order to identify risks and their impacts on stakeholder goals. In this work, we propose GRALD: Goals and Risks Analysis for Linked Data, an approach for modeling goals and risks for information systems for the Web of Data.

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