The thesis introduce the base of network database security, which includes modern cryptology and database security, and introduce principle of fingerprint characteristic in identity identification.

本文首先介绍网络数据库安全的基础：即现代密码学和数据库安全，接着介绍了指纹特征在身份认证中的原理。

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And the so-called violation of the principle of identicals of indiscernibility and transitivity of identity is because essential attributes and non-essential attributes are not differentiated.

而所谓不可分辨者同一原则和同一关系的传递性遭到破坏，乃是因为不区分本质属性和非本质属性。

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It was forgotten that Identity and Opposition are themselves opposed, and the maxim of Opposition was taken even for that of Identity, in the shape of the principle of Contradiction.

因为忘记了同一与对立之间就是对立的，于是，对立的原则在矛盾律的形式下甚至被认为是同一律。

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