1 THEORACTIC E TTA Project THEORACTICE OCT. 25, 2005

2 THEORACTIC E Project Overview 1) Have you ever used DBMS such as Oracle, MS-SQL ? such as Oracle, MS-SQL ? 2) How can you decide whether the DB performance is good whether the DB performance is good or not? or not?

3 THEORACTIC E Project Overview TPC-H based DB Performance measuring tool De facto industry standards body for OLTP ● Examining large amounts of data ● Examining large amounts of data ● Examining queries that are complex ● Examining queries that are complex ● Essential Metrics ● Essential Metrics 1) Time to load the database 1) Time to load the database 2) Queries per Hours (QphH) 2) Queries per Hours (QphH) 3) Price / performance ($ / QphH) 3) Price / performance ($ / QphH)

4 THEORACTIC E Context Diagram (Overall)

5 THEORACTIC E Divide Sub-problems 1) Database Generator 2) Database Query Generator 3) Measure Metrics based on TPC-H 4) Report measured results

6 THEORACTIC E Sub problem-1 (Create DB)

7 THEORACTIC E Sub problem-2 (Create Query)

8 THEORACTIC E Sub problem-3 (Analyze Result)

9 THEORACTIC E Sub problem-4 (Show Report)

10 THEORACTIC E Major Question ? How can we map sub-problems to problem frames ? Given problem frames are enough ?