更糟的是，回发时情况会恶化，此时可能发生额外的冗余数据库调用。
Even worse, the situation continues to degrade upon postback, at which time additional redundant database calls may be made.
在这样的环境中，管理和维护整个企业中的冗余数据库涉及到多个点对点映射和转换，因此成本非常昂贵。
In such an environment, it's costly to administer and maintain the redundant databases across the enterprise, which involves multiple point-to-point mappings and translations.
将冗余数据添加到XML文档的想法对于老练的关系数据库管理员来说是不可思议的。
The thought of adding redundant data to an XML document is heresy to a seasoned relational database administrator.
有情况是有意义的冗余数据存储在一个数据库，提高速度吗？
Are there situations where it makes sense to store redundant data in a database, to increase speed?
然而，众所周知，数据库中往往存在冗余数据、缺失数据、不确定数据和不一致数据等诸多情况，这些数据成了发现知识的一大障碍。
However, as well known, there are many issues in databases, such as redundant data, missing data, uncertain data, inconsistent data, and so on, they are the barriers to knowledge discovery.
如果为数据库中的某个表定义了主键，则可将该表与其他表相关，从而减少对冗余数据的需要。
If you define a primary key for a table in your database, you can relate that table to other tables, thus reducing the need for redundant data.
分析了目前对于冗余数据的常用处理方法，并给出了基于SQL的解决数据库冗余数据方案。
The paper analyzes the common methods using in handling redundancy data, and gives out the solution of the database redundancy data based on SQL.
对蛋白质结构数据库的冗余数据进行分析研究表明，目前国际数据库中的蛋白质的二级结构存在误差，误差率为25%左右。
The redundancy in the database of protein structure is analyzed, that the protein secondary structure of the international database error is around 25%.
在关系数据库中，关系使您可以防止冗余数据。
In a relational database, relationships enable you to prevent redundant data.
在关系数据库中，关系使您可以防止冗余数据。
In a relational database, relationships enable you to prevent redundant data.
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