{"version":"1.0","type":"link","title":"Data Control Block - Newikis","description":"A Data Control Block (DCB) is a description of a dataset in IBM mainframe operating systems, such as OS/360, MVS, and z/OS. A DCB is coded in assembler programs using the DCB macro instruction (which expands into a large number of \"define constant\" instructions). High-level language programmers use…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}