TOTEM: Trusted Online Technical Environment Metadata - A Long-Term Solution for a Relational Database / RDF Ontologies: Paper - iPRES 2011 - Singapore Delve, Janet Ciuffreda, Antonio Konstantelos, Leo iPRES, Singapore Conferences, Conference 2011 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. Text application/pdf 475058 bytes o:294265 hdl:11353/10.294265 http://phaidra.univie.ac.at/o:294265 eng CC BY-SA 3.0 AT http://creativecommons.org/licenses/by-sa/3.0/at/