MD c块索引意味着需要的RID索引更少。
MDC block indexes means that fewer RID indexes are required.
记录并删除mdc表的块索引中的块索引(BID)索引项。
Logs and removes the block index (BID) index entry from the MDC table's block indexes.
多维集群(V 8 GA):使用块索引,数千个记录共用一个索引条目,实现索引压缩。
Multidimensional Clustering (V8 GA) : Implements a form of index compression by using block indexes, one index entry for thousands of records.
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