Time Db

"TimeDB supports a temporal version of SQL called ATSQL2 [SBJS96a, SBJS96b, SBJS98] by translating temporal SQL statements into standard SQL statements which then are evaluated using a commercial database management system (DBMS). TimeDB thus supports a uniform way to implement applications dealing with historical (or temporal) data. By using TimeDB, it is possible to store and manage not only a single database state (as it is done in all the currently available commercial DBMS) but several ones. Research in the area of temporal databases has shown that while it is usually no problem to store the validity time periods of data in commercial DBMS in one way or another, it is very cumbersome to query and update such data and keep it consistent. These drawbacks are eliminated if a temporal DBMS is used. TimeDB, however, is not a temporal DBMS itself but is a frontend to a relational DBMS. By translating temporal SQL into standard SQL statements, TimeDB supports temporal functionality for a non-temporal relational DBMS. The advantage of this approach is that existing databases stored in a commercial DBMS and applications accessing this data still can be used while new applications dealing with temporal data can be added. "

Supports Cloudscape, Oracle 10g, Sybase

Subject:	Time Series
Vendor:	TimeConsult
Subject:	Open Source