>>I haven't heard anything about DB2 in a long time. Glad to hear it's still around. Are they many installations?
>
>#6 world-wide:
>
https://db-engines.com/en/ranking>
>Top 10:
>
>* ----------------------------- ------- ---------------------
>* 1. Oracle Relational DBMS 1283.22 -17.89
>* 2. MySQL Relational DBMS 1161.25 +1.36
>* 3. SQL Server Relational DBMS 1040.34 -11.21
>* 4. PostgreSQL Relational DBMS 460.64 +20.39
>* 5. MongoDB Document store 378.62 +9.14
>* 6. IBM Db2 Relational DBMS 180.75 +0.87
>* 7. Redis Key-value store 146.83 +2.66
>* 8. Elasticsearch Search engine 144.70 +1.24
>* 9. Access Relational DBMS 139.51 +1.08
>* 10. SQLite Relational DBMS 123.02 +0.31
>
>When I worked at Toyota I asked why they used DB2. They said when they were determining what databases to use they did a test. They had each database vendor installed on a server and had it using a real-world-like simulated workload of so-many-hundreds/thousands of transactions per second. They literally went around to the back of the servers and pulled the power cord. Of all the database engines they tested, the only one that didn't lose anything (that was confirmed as written back with confirmation to the client machine) was DB2. Every other vendor lost the last few records. They made the decision and used it ever since.
Interesting
If you had done a similar listing during mainframe days it might have been:
ADABAS, IDMS, IMS.
IDMS, in particular, was the hot one.
Anyone who does not go overboard- deserves to.
Malcolm Forbes, Sr.