The analysis of time-oriented data is an important task in many application scenarios. In recent years, a variety of techniques for visualizing such data have been published. This variety makes it difficult for prospective users to select methods or tools that are useful for their particular task at hand. In this article, we develop and discuss a systematic view on the diversity of methods for ...

This paper discusses our experiences regarding the design and implementation of the MultiView system { a framework for the speciication, creation, and management of updatable views in object-oriented databases (OODBs) { using commercially available OODB technology. MultiView, which simpliies view schema design and maintenance by breaking view speciication into the tasks of class derivation, glo...

In June 1997, an international workshop on engineering of federated database systems has been held in Barcelona in conjunction with the 9th Conference on Advanced Information Systems Engineering (CAiSE'97). This paper reports on the results of this workshop and summarises the identi ed open issues for future research in this area.

* This work is partially supported by the grants No. 8T11C04315 from the State Committee for Scientific Research (KBN), Poland Abstract In this paper we discuss an approach to object– oriented views that we have developed, and propose its implementation. In our model an object–oriented view is defined as a view schema of an arbitrary complex structure and behaviour, composed of view classes. Ea...

In database terminology, a view is a query that is stored and given a name by which it can be used in other queries. Views are an established technique for virtually restructuring data, classes, and schemata so as to meet the needs of specific applications or users, for integrating heterogeneous and distributed systems (for example, data warehouse systems), and for achieving interoperability by...

PIROL is an SEE, designed for object-oriented software development, which itself consequently employs the object-oriented paradigm. PIROL integrates the task of software development with respect to the categories setup by the ECMA reference model. PIROL's architecture covers aspects of CSCW like distribution and notiication. The central concept of PIROL is the idea of diierent views on common i...

With object-oriented database (OODB) systems reaching the status of a maturing technology, increased attention has been given in recent years to the realization of view mechanisms in OODBs. Object-oriented views have the potential for achieving important services, including system interoperability, security , heterogeneous systems integration, schema evolution , data warehousing, and workkow ma...

A number of taxonomies to classify and categorize software visualization systems have been proposed in the past. Most notable are those presented by Price [1993] and Roman [1993]. While these taxonomies are an accurate representation of software visualization issues, they are somewhat skewed with respect to current research areas on software visualization. We revisit this important work and pro...

In this paper we propose a layered approach for aspects’ specification and integration at the logical architecture design level. The proposed approach is based on multiple nominal views and crosscutting aspectual views, composed by architectural aspects. To demonstrate the concept applicability, we apply our ideas to a data warehouse architecture design where the metadata is represented as an a...