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TRACK 1 & 3 DB Engines Learning Objectives At the end of the session, the participants should be able to • Assess an appropriate database engine given a database requirement and design specifications. • List and compare the different database engines available. Steps of DBMS Selection Process • Define Terms of Reference of study • Shortlist two or three products Additional useful information on a product can be gathered by (1) contacting existing users who may provide specific details (2) using available benchmarks that compare the performance of DBMS products. • Siege 1.34 – Home Page: http://www.joedog.org/ • Open Source Database Benchmark 0.10 – Home Page: http://osdb.sourceforge.net/ (Source: SoftLandIndia - Linux: Benchmark Tools, http://www.softlandindia.com/linux/Benchmark.htm) Reference Materials http://www.acm.org/sigmod/databaseSoftware/index.html – an index of publicly available database software http://www.techreviews.com/sections/topics/article/TT20010118S0005 – an evaluation of the five leading relational database companies--IBM, Informix, Microsoft, Oracle, and Sybase Few Popular RDBMS • Open-Source http://www.mysql.org MySQL web site http://www.postgresql.org/index.html - PostgreSQL web site • Commercial http://www.software.hosting.ibm.com/data/db2/index.html - DB2 http://www.informix.com/ - Informix http:// http://www.oracle.com/ - Oracle website http://www.microsoft.com/SQL - MS SQL website http://www.sybase.com/ - Sybase ...DBMS Selection Process • Evaluate products • Recommend selection and produce report This is how a DBMS evaluation form looks like... DBMS Sample Vendor Sample Physical Definition Group Features Comments File structures available Choices of four File structure maintenance NOT self-regulating Ease of reorganization Indexing Variable length fields/records Data compression Specify with the structure Encryption routines None Memory requirements Storage requirements Totals Physical Definition Group Rating 8 6 4 6 6 7 4 0 0 41 5.75 Wgtng. .15 0.2 0.25 0.15 0.15 0.05 0.05 0 0 1.0 0.25 Score 1.2 1.2 1.0 0.9 0.9 0.35 0.2 0 0 5.75 1.44 ...OR JUST TRY... http://www.mysql.com/information/crash-me.php