Manao ahoana, Hello, Bonjour, I have LDAP entries, and SQL tables are the relation between them. There are only relations between 2 entries. There are "modem" and "customers" entries in the LDAP directory I need advice on optimizing the way I store relations. For example (This is on MySQL, just for the example) SELECT * FROM customer_has_modem; +-----------------+----------------+ | customer | modem | +-----------------+----------------+ | a=aa,b=bb,c=ccc | d=dd,e=ee,f=ff | +-----------------+----------------+ Is it OK? Have you another way to do it? - splitting the comma separated fields? - whatever? There might later be be a "date" field in this table to trace the modem movements. Misaotra, Thanks, Merci. -- Architecte Informatique chez Blueline/Gulfsat: Administration Systeme, Recherche & Developpement +261 34 29 155 34 / +261 33 11 207 36 -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general