Several transformation alternatives are discussed in a formal context, resulting in a collection of design options.doi:info:doi/10.1016/S0950-5849(98)00022-6Gy?rgy KovácsPatrick van BommelInformation & Software TechnologyC. Kovács and P. Van Bommel (1998), “Conceptual modelling-based design of...
Logical Data Model:DefinesHOWthe system should be implemented regardless of the DBMS. This model is typically created by Data Architects and Business Analysts. The purpose is to developed technical map of rules and data structures. Physical Data Model: This Data Model describesHOWthe system will be...
In the summer of 1980 high in the Colorado Rockies the mountain flowers were blooming, as were ideas of multi-disciplinary conceptual modelling. The Pingree Park Workshop on Data Abstraction, Database, and Conceptual Modelling [17] marked a figurative an
Conceptual Data Modeling Entity Relationship Model is the basic feature of conceptual data model. In the ERD of this model, the entities are represented as boxes while relationships are depicted in the form of diamonds. An example of relationship can be taken as customer giving order while an ex...
Building an Application with a DBMS Requirements modeling (conceptual, pictures) Decide what entities should be part of the application and how they should be linked. Schema design and implementation Decide on a set of tables, attributes. Define the tables in the database system. Populate database...
suited in the case of a ROLAP implementation. In general however, using a logical data model has a number of negative consequences. First, a logical representation is conceived to describe, at the appropriate level of abstraction, how data is stored in a specific DBMS, but it is usually not...
we discuss different concepts of workload modelling (Sect.2). Second, we explain robust tuning concepts in more detail (Sect.3.9). Third, we revised and extended the description of our LP-based tuning approach. In addition, we also added an evaluation of the approach mentioned above with rep...
Basically, 3D + grid data have been present in weather forecast and climate modelling since the early days of supercomputers; however, these were accessible only by a few experts having logins on the storage servers and deep technical knowledge on the specialized formats used. With the advent of...
Bergamaschi S. and Sartori C. Chrono: A Conceptual Design Framework for Temporal Entities. In Proceedings of the 17th International Conference on Conceptual Modelling, ER, 1998.Bergamaschi, S., Sartori, C.: Chrono: a conceptual design framework for temporal entities. Technical Report CSITE-011-...
G. Saake and T. Hartmann. Modelling Information Systems as Object Societies. In K. von Luck and H. Marburger, editors,Management and Processing of Complex Data Structures, Proc. of the 3rd Workshop on Information Systems and Artificial Intelligence, Hamburg, Germany, February/March 1994, Lecture...