I have presented at the annual conference of the Oracle User Group Ireland four times, in the Gresham hotel on O’Connell Street in Dublin. Here are my slides:

https://www.slideshare.net/brendanfurey7/analysing-performance-of-algorithmic-sql-and-plsqlpptx

https://www.slideshare.net/brendanfurey7/clean-coding-in-plsql-and-sql

https://www.slideshare.net/brendanfurey7/database-api-viewed-as-a-mathematical-function-insights-into-testing

https://www.slideshare.net/brendanfurey7/dimensional-performance-benchmarking-of-sql