In relational database, there are massive relational patterns, in which, data structure is generally structured data or semi-structured data.

关系型数据库中包含了大量的关系模式，其中的数据结构一般为结构化或半结构化数据。

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The labeling algorithm for semi structure database is relatively robust because it takes almost all possible attacks into account.

半结构数据库的标记算法因为在标记时考虑到各种可能的攻击方式，所以其标记有较好的鲁棒性。

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