A secondary index in a pair of indexes used to locate a particular file record . the higher or mass index would often be considered the coarse index 用来查找特定文件记录的一对索引中的第二级索引。高一级的或涉及量大的索引通称为粗索引。
2.
A secondary index in a pair of indexes used to locate a particular file record . the higher or mass index would often be considered the coarse index 用来查找特定文件记录的一对索引中的第二级索引。高一级的或涉及量大的索引通称为粗索引。