Showing papers on "Meta Data Services published in 1988"
TL;DR: The notion of metadata and the role it plays in a user's understanding of data in a database is introduced and a metadata knowledge representation (MAKR) is described which relates database metadata to a KL-ONE style meaning representation.
Abstract: We introduce the notion of metadata and the role it plays in a user's understanding of data in a database. We survey the kinds of metadata present in database schemas through an Abstract Conceptual Schema, and also the kinds of metadata associated with frames in knowledge engineering tools. Finally we look at networks used for natural language understanding, (KL-ONE and MEMORY), and describe a metadata knowledge representation (MAKR) which relates database metadata to a KL-ONE style meaning representation. Examples in MARK are used to illustrate the kinds of metadata surveyed in the first part of the paper.
26 citations
TL;DR: A system call Difead (Dictionary interface for expert system and databases) is described that uses metadata stored in an active DDS to couple expert systems and databases.
Abstract: Data as a resource in information processing environments is well known, but only recently has the computing community recognized the role of metadata, i.e. data about data. In particular, Data Dictionary Systems, (DDSs), whose main purpose is metadata management, are seen as essential for successful data processing. The artificial intelligence community also recognises this in meta knowledge. A system call Difead (Dictionary interface for expert systems and databases) is described that uses metadata stored in an active DDS to couple expert systems and databases. The prototype is being evaluated on an application that couples two medical expert systems with a relational clinical database.
11 citations