ISPF (z/OS) - Managing Data Files and Definitions with ISPF/PDF Flashcards
Data set type
Data that’s formatted one line after the other, like a file.
Sequential
What access method is used for sequential datasets?
BSAM
QSAM
Data set type
Stores data in individual members, with a directory supplied for quick access to the required member
Partitioned
What access method is used for partitioned datasets?
BPAM
Data set type
Complex type to optimize overheads created by dataset management routines
VSAM
Dataset type commonly used in database applications because they can be read and updated efficiently by more than one program data time.
VSAM
How many VSAM dataset types are there
Four
What are the VSAM dataset types?
KSDS
RRDS
ESDS
LDS
Which is the most common VSAM dataset type and why?
KSDS
They can access data directly through a key field within each record.
What access method is used for VSAM datasets?
VSAM
Dataset type
A type of sequential or partitioned dataset used to group related data with a common name?
Generation dataset
Dataset type whose files contain data that is stored in a UNIX-like directory on a z/OS system
z/OS UNIX File
z/OS Unix File access method
BSAM
QSAM
BPAM
VSAM
Dataset type that is a stream of bytes that have no specific format or record orientation.
Object
What is the access method of the Object dataset type?
Object Access
Method (OAM)
