SampleDB: A sample and measurement metadata database

MetaData for Database Mining

At present, a machine learning application is accomplished by carefully crafting a single table from an often complex, multi-table database. The metadata necessary to create this table is rarely formally recorded, and is sometimes implicit in the structure of the database or the typing of the attributes. We categorize the types of metadata that we have encountered in our work with machine learn...

A metadata approach to multimedia database federations

Recent research in federated database systems has advanced in the direction of federations of multimedia databases. However, in each project studied, there has been little emphasis placed on the subject of meta-models. Conversely, standard database systems (relational, object-relational and object-oriented) define metadata models that lack multimedia and federation features. In this paper, a sp...

Assembling Metadata for Database Forensics

Since information is often a primary target in a computer crime, organizations that store their information in database management systems (DBMSs) must develop a capability to perform database forensics. This paper describes a database forensic method that transforms a DBMS into the required state for a database forensic investigation. The method segments a DBMS into four abstract layers that s...

Handwriting Sample Image Database

Automated Database Mediation Using Ontological Metadata Mappings

Background: One challenge of database federation is that the granularity of representation of equivalent data varies across systems. Dealing effectively with this problem is analogous to dealing with precoordinated vs. postcoordinated concepts in biomedical ontologies. Model Description: The authors describe an approach based on ontological metadata mapping rules defined with elements of a glob...