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=Resources for NexJ PostgreSQL Project===Java====Database& Persistence==
===Database===
: Agile database practice [http://www.agiledata.org/essays/bestPractices.html]
:
==PostgreSQL and - MySQLSpecifications==
* Postgre
: Installation: [http://www.postgresql.org/download/]
*The current versions are MySQL 5.1 and PostgreSQL 8.4.
#PostgreSQL is a unified database server with a single storage engine. MySQL has two layers, an upper SQL layer and a set of storage engines. [http://www.wikivs.com/wiki/MySQL_vs_PostgreSQL]
==PostgreSQL - MySQL Compare==
#MySQL began development with a focus on speed while PostgreSQL began development with a focus on features and standards. Thus, MySQL was often regarded as the faster of the two.
# Both PostgreSQL and MySQL support Not-Null, Unique, Primary Key and Foreign Key constraints. However MySQL silently ignores the CHECK constraint
