| 释义 |
VSAM master catalog
VSAM(虚存存取法)主目录
A keysequenced data set or file with an index containing extensive data set and volume information that VSAM requires to locate data sets or files, to allocate and deallocate storage space, to verify the authorization of a program or operator to gain access to a data set or file, and to accumulate usage statistics for data sets or files.
一种按关键字排序的数据集或文件，它包含广泛的数据集和卷信息的索引，VSAM用该索引 来寻找数据集或文件，分配或收回存储空间，验证程序或操作员获得对数据集或文件访问的授权， 以及累积数据集或文件的使用统计信息。 |