Hello, We are now planning to move over, from plan text file storage to database storage. However, we do see our disc usage increased by factor of 50. http://sites.google.com/site/yanchengcheok/Home/du.PNG (1) Is there any need for me to create idx_fk_measurement_type_id and idx_fk_measurement_unit_id The above 2 are the index for measurement's foreign key. However, these 2 foreign key are only used in JOIN statement, but never used in WHERE statement. So, if I remove the 2 index, will I still achieve the same query performance? (2) How can I increase the compression ratio for my database? Thanks and Regards Yan Cheng CHEOK -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
