In its 2004 report "Data and information", the International Council for Science (ICSU) strongly recommended a new strategic framework for scientific data and information. On an initiative from a working group from the Committee on Data for Science and Technology (CODATA), the German Research Foundation (DFG) has started the project “Publication and Citation of Scientific Primary Data” as part ...

One of the eeorts of the LIOM group has been the construction of a federated database architecture which facilitates a dynamic healthcare environment. Changes occur in a federated database environment when attributes are added, removed or modiied at local database level, or when an entire node (database) is added or removed. Database systems use a powerful construct called metadata to deene the...

Spreadsheets contain valuable data on many topics, but they are difficult to integrate with other sources. Converting spreadsheet data to the relational model would allow relational integration tools to be used, but using manual methods to do this requires large amounts of work for each integration candidate. Automatic data extraction would be useful but it is very challenging: spreadsheet desi...

We present an overview of on-going research, system design and middleware that has been implemented on top of a relational DBMS to provide advanced personalized information services in an integrated digital TV and Internet environment. The middleware provides automatic selection of programs or parts of programs based on users’ preferences. It is compatible to the TVAnytime Forum specifications ...

tem provides integrated support for spatiotemporal and semantic queries for video.1 A knowledge base—consisting of a fact base and a comprehensive rule set implemented in Prolog— handles spatio-temporal queries. These queries contain any combination of conditions related to direction, topology, 3D relationships, object appearance, trajectory projection, and similaritybased object trajectories. ...

Modern file systems need to handle extended metadata. Existing file systems are not equipped to handle managing metadata in the amount of files and the diversity of files that these file systems are now supporting. Users need better searching and querying capabilities. Metadata within files still remain applicationand file format-specific and is often proprietary, which makes searching difficul...

The metadata schema of a digital archive describes the structure and attributes of metadata. Analysis and definition of metadata schema for a new digital archive must be carefully carried out and determined at the first stage of development. To ease the task, we used an Extensible Markup Language (XML) structure to represent the metadata schema, and then designed and implemented a metadata sche...

Metadata is the important information describing geographical data resources and their key elements. It is used to guarantee the availability and accessibility of the data. ISO 19115 is a metadata standard for geographical information, making the geographical metadata shareable, retrievable, and understandable at the global level. In order to cope with the massive, high-dimensional and high-div...

Object-relational technology provides a significant increase in scalability and flexibility over the traditional relational databases. The additional object-relational features are particularly satisfying for advanced database applications that relational database systems have experienced difficulties. The key factor to the success of object-relational database systems is their performance. To ...

Database reverse engineering (DBRE) recovers a database design using a semantic data model. Most of the existing works and tools for DBRE and database design specify relational database schemas with extended ER models. The Unified Modeling Language (UML) is a standard language for modeling software and database systems. We discuss how to extend the UML metamodel with elements for modeling relat...