About this document
HRDM: Lifespans and Historical Algebra by Septiawan Moge is a document available to read on EtoBox.
The document discusses the Historical Relational Data Model (HRDM) for temporal databases. It describes associating lifespans at the database, relation, and tuple levels to define the time periods over which data is valid. Relations in HRDM include a set of attributes and historical domains consisting of time and value functions. The historical relational algebra operations for HRDM are also introduced, including joins based on time and attribute values.
- Author
- Septiawan Moge
- Language
- EN