http://groups.google.com.tw/groups?hl=zh-TW&lr=&ie=UTF-8&oe=UTF-8&threadm=2cf20de8.0206091937.76a7e6ee%40posting.google.com&rnum=2&prev=/groups%3Fq%3Dbook%2520entity%2520relational%26hl%3Dzh-TW%26lr%3D%26ie%3DUTF-8%26oe%3DUTF-8%26sa%3DN%26tab%3Dwg entity relationship book relational oo

有人回
P.S. ERM has been considered harmful since 1988. Conceptual modelling (ORM
for instance) and normalization form the basis of database design. Combined
with Date's and McGoveran's "Principle of Orthogonal Design", these
techniques will give you a better foundation for practical data modelling
and database design.

http://groups.google.com.tw/groups?hl=zh-TW&lr=&ie=UTF-8&oe=UTF-8&threadm=e4330f45.0402180824.11f47137%40posting.google.com&rnum=1&prev=/groups%3Fq%3Dentity%2Brelationship%2Bconsidered%2Bharmful%26btnG%3D%25E6%2590%259C%25E5%25B0%258B%26hl%3Dzh-TW%26lr%3D%26ie%3DUTF-8%26oe%3DUTF-8