在DB 29中,在构建字典时,任何小于或等于数据库管理器最小记录长度的数据行都不用于抽样,并且在行压缩期间不会被压缩。
In DB2 9, any data row that is equal to or less than the database manager minimum record length is not used in the sampling when building the dictionary, and is not compressed during row compression.
对于数据行小于或等于最小记录长度的表的行压缩中的行为变化。
Behavior changes in row compression for tables that have data rows less than or equal to the minimum record length.
例如,关于所录制的歌曲的元数据可能包括关于演唱者、专辑、作曲、长度或质量的信息,而数据则是音频记录本身。
For example, metadata about a recorded song might include information about its artist, album, composer, length, or quality, whereas the data is the audio recording itself.
要把数据表中的相似重复记录标识出来,常用的方法是先将所有记录按照某个关键字进行索引,然后在一个固定长度的窗口范围内进行记录的两两比对。
The common approach of marking the approximately duplicate records is that a pair of records are compared in a window with fixed length after these records are indexed by a certain keyword.
每个记录参考一个相关数据的可变长度存储器,一个64位key。而一个创建和删除处理ID根据这个key被索引。
Each record references a variable-length store of related data, a 64 bit key, and a creation and deletion transaction id which is indexed along with the key.
每个记录参考一个相关数据的可变长度存储器,一个64位key。而一个创建和删除处理ID根据这个key被索引。
Each record references a variable-length store of related data, a 64 bit key, and a creation and deletion transaction id which is indexed along with the key.
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