The OASIS multidatabase prototype

Multidatabase Languages Chapter 1. Multidatabase Languages

Introduction Database systems based on SQL are well suited for homogeneous databases { either centralized or distributed. Most traditional database architectures, however, seem inadequate to handle diierent t ypes of heterogeneity. I n terop-erability at the system level can be achieved to some degree by i n terposing an additional interface layer between a database system and the application, ...

Oasis.

The CORDS Multidatabase Project

In virtually every organization, data re stored in a variety of ways and managed by different database and file systems. Applications requiring data from multiple sources must recognize and deal with the specifics of each data source and must also perform any necessary data integration. The objective of a multidatabase system is to provide application developers and end users with an integrated...

The OASIS Concept

OASIS is an Integrated Project with the aim to revolutionise the interoperability, quality, breadth and usability of services for all daily activities of the elderly, by developing and deploying innovative technological challenges, consisting of a new, open architecture and a hyper-ontological framework. A wide range of applications are integrated in the areas of independent living, socializati...

Multidatabase Querying by Context

The overwhelming acceptance of the SQL standard [10] has curtailed continuing research work in relational database query languages and processing. Since all commercial relational database systems conform with the SQL standard, there is little motivation for developing new query languages. Despite its benefits and wide-spread acceptance, SQL is not a perfect query language. Complex database sche...