Management methods traditional book has some disadvantages, such as the need for more staff, heavy workload, the management information stored query inconvenient.
传统图书管理方式存在一些弊端，比如需要人员较多，工作量很大，管理资料保存查询不方便等。
Using a stored procedure as query subject input has the advantage that no unnecessary tables or views are created in the database.
使用存储过程作为查询主题输入有一个好处，那就是不需要在数据库中创建不必要的表或视图。
Like a stored table, the result of a relational query is flat, regular, and homogeneous.
与所存储的表一样，该关系查询的结果也是平面的、规则的、同构的。
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