A collection of contiguous records recorded as a unit.Blocks are separated by interblock gaps and each block may contain one or more records.
为一个单位来记录的相连记录的集合。各块由块间间隙开,而每块可以含一个或多个记录。
A collection of contiguous records recorded as a unit.Blocks are separated by interblock gaps and each block may contain one or more records.
为一个单位来记录的相连记录的集合。各块由块间间隙开,而每块可以含一个或多个记录。
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