1. COBOL语言总结(一)_杀神lwz的博客05WK1PIC1(001)BITOCCURS8.//定义一个数组,每一项是一比特,共有8比特。 //COBOL语言中的表(TABLE)类似于其他高级语言中的数组(ARRAY) //1.OCCURS子句不能出现在77层,因为77层是独立的数据项。 //2.OCCURS子句不能用于01层。
2. vsam - FelixNiu001 -与ISAM文件一样,KSDS文件根据用户在每个记录中所定义的键字段作为次序,也就是文件中的记录根据在每个记录 中的键字段的排序序列而定位,每个记录在键字段有唯一的一个值。VSAM使用与每个记录相结合的键,把记录插入到文件中,或者从文件中...
3. z/OS V1.12 DFSMS Technical Update2 z/OS V1.12 DFSMS Technical Update 1.3.1 Control area reclaim Over time, VSAM key-sequenced data sets (KSDS) for which records are added and deleted have often become fragmented and have a significant number of ...
4. IBM US Announcement LetterOver time, VSAM key-sequenced data sets (KSDS) for which records are added and deleted have often become fragmented and have a significant number of empty Control Areas (CAs) that consume DASD space, increase the size...
5. System z and z/OS unique CharacteristicsVSAM can be organized into three types of dataset: Entry Sequenced Data Set (ESDS), Key Sequenced Data Set (KSDS), and Relative Record Data Set (RRDS). ESDS items are listed in the order in which they were input...
SFCD-001