Basic Sequential Access Method - The simplest data set on an IBM mainframe. A sequential file access method for reading, writing and updating sequential data sets and partitioned data set members. For additional information refer to the QSAM definition in this glossary or http://www.simotime.com/indexsam.htm

Basic Sequential Access Method. An operating system access method for pure sequential files (e.g. cards, tape, disk, printer).

Basic Sequential Access Method. One of two access method 1s used to read and write sequential dataset 1s in z/OS. A part of DFSMSdfp. See also QSAM.