布兰妮很少更新自己的Twitter，但她数百万的追随者们似乎并不介意。
Spears doesn't tweet herself, but her millions of followers don't seem to mind.
如下面的图2所示，您需要分别按频繁更新和很少更新将数据库分成动态部分和静态部分。
As shown in Figure 2 below, you need to split the database into dynamic and static partitions for frequent and infrequent updates, respectively.
位图索引：它适用于不同值的数量是非常少的也大多使用的表，很少更新或不更新所有。
BITMAP Indexes: It is used when the number of distinct values is very less also mostly used on tables that are very less updated or not updated at all.
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