eng Text application/pdf Delve, Janet Ciuffreda, Antonio Konstantelos, Leo CC BY-SA 3.0 AT http://creativecommons.org/licenses/by-sa/3.0/at/ iPRES, Singapore Conferences -- iPRES Conference (001000) -- Conference 2011 (001006) TOTEM: Trusted Online Technical Environment Metadata - A Long-Term Solution for a Relational Database / RDF Ontologies: Paper - iPRES 2011 - Singapore hdl:11353/10.294265 https://phaidra.univie.ac.at/o:294265 For emulation and other preservation actions, metadata is needed to describe the technical environment (operating system, related software libraries, hardware etc.) in which a given file or item of software can be rendered. This paper delineates an enhanced entity attribute relationship model suitable as a basis for a database (relational, object-relational or object-oriented), or for a RDF ontology. This core data model covers the X86, Apple II and Commodore 64 (C64) hardware architectures, as well as games consoles. The model is currently instantiated as a MySQL database with accompanying API, plus a PHP-based browsing system. Data population, and user evaluation are also discussed. The model is extensible over the long term and is compatible with OAIS and PREMIS version 2.