If you like organization, excellent documentation, and compliance with standards, then PostgreSQL is the right choice.

If you prefer chaos; if you like having certain features unavailable to you unless you choose a certain database engine; if you like reading that the syntax accepted before version 3.x.y is not available afterward, or that you are allowed to use a subqueries only after version 4.1, but only if you don't do it on the same table; if you like reading errata to learn that certain operations cannot be performed on temporary tables, but that that feature is planned for versions starting with 5.2, MySQL is the thing for you.

MySQL is excellent

I've seen MySQL and moved on :}

PostgreSQL for sure.

I'm using SQL myself, but I'm starting to get very worried about the license...
Is their any difference with PostgreSQL. If not what databases should I start using to avoid all this license stuff. For me this is a very important issue(I don't mind using something less good if it's completely free). This one would also be my database of the year

it very fast and very easy to handle.

PostgreSQL 8.x includes most of SQL 99 plus a couple of its
own extensions. Just have a look at their web-site, and read
up on their features. Or tell me which features you're currently
using with whateverSQL, and I'll try to tell you whether PostgreSQL
can ...


Cheers,
Tink

I use progress and it is really fantastic. It is just like
a programming language.

Have you guys ever tried Firebird? It's superb!

I can't afford MySQL licence for my commercial customers, and my customers can't afford to hire a database manager to manage Postgres.

I need solid performance, SQL compliance without spending lots of $$$. The choice is logical: Firebird!.

MySQL is what I use (if I use anything at all, which for the most part I don't. Did I confuse you enough there?)

It's not clear to me why you feel the need for a commercial license for MySQL, a GPL'ed application. Do you plan to make extensions or modifications that you don't want to release? That kind of work sounds quite expensive, too.

My SQL is always been my fav. There is a lot of support provided for that

Post seems to stick closer to the "GPL" theme than MySQL, so that makes it my fav, though they each have their advantages from a performance perspective.

No, I have no plans or desire to extend or modify and RDBMS, but I want to use one for a commercial application. If I use MySQL I have to pay license fees. With Firebird I don't.

Quote from MySQL site:

#

If you include the MySQL server with an application that is not licensed under the GPL or GPL-compatible license, you need a commercial license for the MySQL server.
#

If you develop and distribute a commercial application and as part of utilizing your application, the end-user must download a copy of MySQL; for each derivative work, you (or, in some cases, your end-user) need a commercial license for the MySQL server and/or MySQL client libraries.
#

If you include one or more of the MySQL drivers in your non-GPL application (so that your application can run with MySQL), you need a commercial license for the driver(s) in question. The MySQL drivers currently include an ODBC driver, a JDBC driver and the C language library.