Andreas Miethsam

Learn More
In this paper, we present algorithms which allow an object-oriented querying of existing relational databases. Our goal is to provide an improved query interface for relational systems with better query facilities than SQL. This seems to be very important since, in real world applications, relational systems are most commonly used and their dominance will(More)
In this paper, we describe a framework for an object-oriented modeling of meta information and its use for the integration of heterogeneous databases with the goal of their interoperation. The meta information consists of all types of information necessary to access and interoperate the participating databases. As part of the meta information, we model the(More)
In this paper, we present a query translation algorithm which allows object-oriented queries to be automatically translated into a relational query language. Our goal is to provide a unique and powerful query interface supporting the cooperation of information systems, particularly under the aspect of migrating existing systems without changes into the(More)
ConceptBase is a multiuser deductive object manager intended for conceptual modeling, meta modeling, and coordination in design environments. The system implements O-Telos, a dialect of Telos integrating properties of deductive and object-oriented languages. It uniformly represents all information regardless of its abstraction level (data, class, meta(More)
In this paper, we describe a framework for an object-oriented modeling of meta information. The meta information consists of all kind of information necessary to access and interoperate the participating databases. As part of the meta information, we model the common properties and differences of the various data models and concrete systems. We also include(More)
In this paper, we present algorithms which allow an object-oriented querying of existing relational databases. Our goal is to provide an improved query interface for relational systems with better query facilities than SQL. This seems to be very important since, in real world applications, relational systems are most commonly used and their dominance will(More)
  • 1