Contributed a review of PostgreSQL on Ubuntu: Advanced queries have powered feature engineering and ensured reliable data analysis

Contributed a review of MySQL on Ubuntu: Daily user events have accelerated dashboard insights but still need stronger analytics queries

Contributed a review of SQL Server 2014 Express: Learning SQL querying has improved my data analysis skills but database size limits remain challenging

Contributed a review of Dropbox Sign: Digital signing has streamlined document approvals but has remained underused in daily work