The Community for Technology Leaders
Green Image
Issue No. 04 - April (1989 vol. 15)
ISSN: 0098-5589
pp: 464-478
<p>The authors propose a graphical query language, Time-by-Example (TBE), which has suitable constructs for interacting with historical relational databases in a natural way. TBE is user-friendly. It follows the graphical, two-dimensional approach of such previous languages as Query-by-Example (QBE), Aggregation-by-Example (ABE), and Summary-Table-by-Example (STBE). TBE also uses the hierarchical window (subquery) concept of ABE and STBE. TBE manipulates triple-valued (set-triple-valued) attributes and historical relations. Set-theoretic expressions are followed to deal with time intervals. The BNF specification for TBE is given.</p>
triple-valued attributes; graphical query language; Time-by-Example; historical relational databases; Summary-Table-by-Example; historical relations; query languages; relational databases.
"Time-by-Example Query Language for Historical Databases", IEEE Transactions on Software Engineering, vol. 15, no. , pp. 464-478, April 1989, doi:10.1109/32.16597
103 ms
(Ver 3.3 (11022016))