计算机术语“VSAM master catalog”的中英文意思、释义、翻译及用法-计算机英汉双解词典

术语	VSAM master catalog
释义	VSAM master catalog VSAM(虚存存取法)主目录 A keysequenced 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。
随便看	update cursor updatedrecord mark update file update generation update in site update intent update lock update mark update notes update operation update period update program update rights update run update transaction update usage mode updateonly recovery updating and file maintenance upgrade upload upper and lower case upper bound (UB, UPB) upper case upper curtate upper letter row

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