买卖的法律结构探讨

采用历史与比较方法分析买卖所涉及的两个问题。其一，买卖契约仅产生债的效力，抑或还直接产生物权效力；其二，物权变动是“要因”还是“无因”。罗马法及中世纪上，就合意性的买卖契约而言，它仅产生债的效力，所有权的移转须以交付为要件，这·点被以后的大多数国家所承继。而在同一时期，由于观念交付的出现，以及人文主义法学派的影响，买卖契约的物权性品格也有所体现。物权变动“要因主义”与“无因主义”在罗马文献上都得到印证。

Discussion on the Legal Structure of Business

This paper uses the method of historical and comparative analysis of the two problems involved in the sale, a contract of sale is effective only debt, or even directly produce effect of real right; the second is the alteration of real right is＂for＂or＂no reason＂. This paper thinks, Rome and medieval, on the desirability of the sale contract, validity and it produces only the debt, the transfer of ownership to be delivered to the elements, which was later inherited most of the countries, while at the same time, due to the emergence of ideological delivery, as well as the influence of humanism law school a contract for the sale of real property, character is also reflected. But real change＂for＇and ＂no＂ are confirmed in Rome literature.