Postgresql (see http://www.postgresql.org/docs/devhistory.html for a Postgres history lesson) is a much more mature application.  MySQL (http://www.mysql.com/news.html) is relatively new.  Another difference is that MySQL runs on both Unix and NT.  Why is MySQL more popular?  I don't really know.  But, I suppose it has something to do with the fact that there is an O'Reilly about it, whereas there is very little if any commercially published documentation on PostreSQL.  

-----Original Message-----
From: danb35 [mailto:danb35@earthlink.net]
Sent: Wednesday, September 22, 1999 11:11 PM
To: expert
Cc: danb35
Subject: Re: Re: [expert] mysql

From: Vincent Danen <vdanen@softhome.net>

> Is one better than the other?  Should I use mysql instead of postgresql or

    Well, postgresql is open source, and MySQL (with the exception of one
older version) isn't.  That makes a big difference to some people.