Sciences des données : de la logique du premier ordre à la Toile (collège de france)
http://books.openedition.org/cdf/529
thethirdmanifesto C. Date
http://www.thethirdmanifesto.com/
MySQL
http://www.mysql.com
PostgreSQL
http://www.postgresqlfr.org/
Caché (intersystem)
http://docs.intersystems.com/documentation/cache/20101/index.html
MS SQL Server
http://www.microsoft.com
Oracle
http://www.oracle.com
Oracle SQLhttp://ss64.com/ora/index.htmlIBM DB2
http://www.ibm.com
Firebird sql
http://www.firebirdsql.org/
Borland Interbase
https://downloads.embarcadero.com/free/interbase
ODBMS
http://www.odbms.org/
sql.developpez.com
http://sql.developpez.com/
tuto mysql
http://www.tutorialspoint.com/mysql/mysql-data-types.htm