PostgreSQL
has some more advanced features like user-defined
types, triggers, rules and some transaction support. However, PostgreSQL lacks
many of the standard types and functions from ANSI SQL and ODBC. See the
crash-me
web page
for a complete list of limits and which types and functions are supported
or unsupported.
Normally, PostgreSQL
is a magnitude slower than
MySQL. 11 La suite de tests de MySQL. This is due largely to their
transactions system. If you really need transactions or the rich type
system PostgreSQL offers and you can afford the speed penalty, you
should take a look at PostgreSQL.