Virtual Storage Access Method (English Wikipedia)

Lovelace et al. 2022, p. 5, 1.3.2 Record management. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Lovelace et al. 2022, p. 41, 1.8.1 DB2. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Lovelace et al. 2022, p. 28, 1.5.2 Entry-sequenced data set. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Rogers, P.; Capobianco, G.; Carey, D.; Davies, N.; Fadel, L.; Hewitt, K.; Oliveira, J.; Pita, F.; Salla, A.; Sokal, V.; Tay, Y. F.; Timm, H. (April 2000). "1.19.11 Entry sequenced data set (ESDS)" (PDF). ABCs of OS/390 System Programming - Volume 3 (PDF). Redbooks. International Technical Support Organization IBM. p. 108. ISBN 978-0-7384-1618-2. SG24-5653-00. Retrieved July 6, 2025. Although an entry-sequenced data set does not contain an index component, alternate indexes are allowed. You can build an alternate index to keep track of these RBAs.
Lovelace et al. 2022, p. 20, 1.5.1 Key-sequenced data set (KSDS). Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Lovelace et al. 2022, p. 13, 1.4.6 Components. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Lovelace et al. 2022, p. 15, 1.4.7 Clusters. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Lovelace et al. 2022, p. 10, 1.4.3 Control interval. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Lovelace et al. 2022, p. 12, 1.4.5 Control area. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Lovelace et al. 2022, p. 17, 1.4.10 Splits. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Lovelace et al. 2022, pp. 15–16, 1.4.8 Alternate indexes. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Lovelace et al. 2022, p. 16, 1.4.8 Alternate indexes. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Lovelace et al. 2022, pp. 29–30, 1.5.3 Relative record data set. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Lovelace et al. 2022, p. 30, 1.5.3 Relative record data set. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Lovelace et al. 2022, p. 30, Relative record data set. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.
Lovelace et al. 2022, p. 31, 1.5.5 Linear data set. Lovelace, Mary; Dovidauskas, Jose; Salla, Alvaro; Sokal, Valeria (August 2022). VSAM Demystified (PDF). Redbooks (3 ed.). IBM.

ibm.com

"Control Interval Size Limitations". IBM. 27 March 2014.
"IBM Knowledge Center". www.ibm.com. 27 March 2014. Retrieved 2021-02-07.
ASMGUIDE, pp. 225-248, Chapter 14. Data-in-virtual. z/OS 2.5 MVS Programming: Assembler Services Guide (PDF). IBM. September 30, 2021. SA23-1368-50.
ASMGUIDE, pp. 293-310, Chapter 17. Window Services. z/OS 2.5 MVS Programming: Assembler Services Guide (PDF). IBM. September 30, 2021. SA23-1368-50.
"Local shared resources (LSR) or nonshared resources". IBM.
"Sharing VSAM Data Sets". IBM.com (IBM Knowledge Center). describes considerations for sharing VSAM data sets for NSR or LSR/GSR

www-01.ibm.com

"User's Guide" (PDF). 16 February 2024.
"Linear Data sets" (PDF). z/OS 2.5 DFSMS Using Data Sets (PDF). IBM. September 30, 2021. p. 91. SC23-6855-50.

justia.com (Global: 673^rd place; English: 333^rd place)

patents.justia.com

"US Patent for Providing record-level alternate-index upgrade locking".

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"Server Functionality". Sequential (VSAM ESDS – Entry Sequenced Dataset)^{[dead link]}

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citeseerx.ist.psu.edu

"ABCs of z/OS System Programming Volume 3". An ESDS VSAM data set contains records in the order in which they were entered{{cite web}}: CS1 maint: miscellaneous url (link)

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"VSAM – Components".^{[dead link]}

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"VSAM: introductory".

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"What is VSAM?". This index is called a B+ tree.

Virtual Storage Access Method (English Wikipedia)

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