What gets me about that is I'm pretty sure that even in 1999 you could have built a LAMP stack, which likely would have suited the inclinations of anyone developing on Linux. I'm trying to do this from memory without Googling, but I think Oracle was introduced in 1981 and PostgreSQL and DB2 had been around since the 1970s. SQL Server 7 and FoxPro were around, though it's unlikely they would have been interested in developing on Windows. Now I realize these are all relational database platforms. As Sweety D indicated, there weren't any document database, graph database, or NoSQL database platforms around. My experience has been that most (definitely not all) code developer familiarity with database platforms is pretty limited. I would guess that in 1999 it was next to non-existent. What's ironic is that MySQL tables are stored as individual files.