3007ATRICONEX康吉森3700英维思冗余模块

3007ATRICONEX康吉森3700英维思冗余模块

3007ATRICONEX康吉森3700英维思冗余模块

数据冗余是指数据之间的重复，也可以说是同一数据存储在不同数据文件中的现象。可以说增加数据的独立性和减少数据冗余是企业范围信息资源管理和大规模信息系统获得成功的前提条件。

冗余数据的管理所谓的数据冗余是指数据库的数据中有重复信息的存在,这自然浪费了很多的存储空间,尤其是存储海量数据的时候。

数据冗余是指同一数据被反复存放.这样着某一属性值发生改变其他与之相同的属性值也要改变.数据冗余不仅增加了更新代价更严重的是其潜在的数据不一致及存贮空间浪费等问题。

在数据库中存贮这类导出数据项需占用较多的存贮空间亦称为数据冗余.存贮冗余数据不仅代价高也是产生数据不一致的根源。

3007ATRICONEX康吉森3700英维思冗余模块

Data redundancy is the duplication of data, or the phenomenon in which the same data is stored in different data files. It can be said that increasing data independence and reducing data redundancy are the prerequisites for the success of enterprise-wide information resource management and large-scale information systems.

Redundant data management The so-called data redundancy refers to the existence of duplicate information in the database data, which naturally wastes a lot of storage space, especially when storing massive data.

Data redundancy means that the same data is stored repeatedly. So if the value of one property changes, the value of other properties that are the same must also change. Data redundancy not only increases the cost of updating, but also causes potential data inconsistency and waste of storage space.

Storing such exported data items in the database requires a large amount of storage space, which is also called data redundancy. Storing redundant data is not only costly but also a source of data inconsistencies.