A prototype of a temporal database management system was built by extending Ingres. It supports the temporal query language TQuel, a superset of Quel, handling four types of database static, rollback, historical and temporal. A benchmark set of queries was run to study the performance of the prototype on the four types of databases. We analyze the results… (More)
The aaliations and e-mail addresses of the TSQL2 Language Design Committee members may be found in a separate section at the end of the document.