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Article #22115Re: �����������һ�����ⲻ֪���Dz������й���...
From: �㶹����
Date: Wed, 22 Oct 2003 09:06
Date: Wed, 22 Oct 2003 09:06
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1893 bytes
thank u for ur opinion! :-) i lack of essential knowledge in ralational database and object tech. for these problem such as i asked, no standard. you can only find ur key by ur experience. �� �� oldengine (����Java) �Ĵ������ᵽ: �� : : �� �� peasefish �Ĵ������ᵽ: �� : : Well, I have heard of Hibernate from internet. What I wanna know is that t.. : : principles of the O/R mapping. Hibernate is a wonderfull tech, but tech i.. : : static and reality is variable. Of cource, principle sometimes is dead as .. : : ll. :-) : : �� �� oldengine (����Java) �Ĵ������ᵽ: �� : There are some limits of O/R mappings. We need to use O/R mapping to save obje : cts, instead of tuples into relational database. We have to use O/R mapping be : cause the object oriented database technology is simply not general enough or : .................������ʡ�ԣ� -- http://bbs.sjtu.edu.cn/showfile?name=�š�Ь.jpg �ҵķ��� [m[1;33m�� ��Դ:����ˮ˼Դ bbs.sjtu.edu.cn��[FROM: 211.80.42.160][m
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X-Google-Language: ENGLISH,GB X-Google-Thread: f6cb0,b7ec32aa26e85413,start X-Google-Attributes: gidf6cb0,public X-Google-ArrivalTime: 2003-10-28 06:54:54 PST Path: arc1-ca.pugleaf.net!archiver1.google.com!news2.google.com!fu-berlin.de!newsgate.cuhk.edu.hk!news.zixia.net!news.happynet.org!news.ccie.net.cn!SJTU From: peasefish.bbs@bbs.sjtu.edu.cn (�㶹����) Newsgroups: cn.bbs.comp.lang.java Subject: Re: �����������һ�����ⲻ֪���Dz������й���... Date: 22 Oct 2003 09:06:59 GMT Organization: ��ˮ˼Դ Message-ID: <48kIV0$A4T@bbs.sjtu.edu.cn> Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: 8bit X-Filename: Java/M.1066813392.A Lines: 22