Linear data set
IBM data record organization type From Wikipedia, the free encyclopedia
A linear data set (LDS) is a type of data set organization used by IBM's VSAM computer data storage system.[1]: 5
 | It has been suggested that this article be merged with Entry-sequenced data set, Key-sequenced data set and Relative record data set to Virtual Storage Access Method. (Discuss) Proposed since March 2025. |
 | This article needs additional citations for verification. (September 2017) |
The LDS has a control interval size of 4096 bytes to 32768 bytes[2] in increments of 4096.[1]: 31 A LDS does not have embedded control information, because it does not contain control information, the LDS cannot be accessed as if it contained individual records.[3]
Addressing within an LDS is by Relative Byte Address (RBA), which allows it to be used by systems such as IBM Db2 or the Operating system.[clarification needed] The benefit of this is that systems such as the OS can access multiple disk spindles and view it as a single storage implementation. The limitations of this, though, is that this does not make this particularly useful to higher level abstraction levels.[original research?] Data In Virtual[4] (DIV) and Window services[5] provide an alternative method to direct use of VSAM to access an LDS with a CI size of 4096.
See also
References
Wikiwand - on
Seamless Wikipedia browsing. On steroids.