(Virtual Storage Access Method) An IBM access method for storing data, widely used in IBM mainframes. VSAM uses the B+tree method for organizing data. See B-tree.
"VSAM." YourDictionary, n.d. Web. 22 June 2018. <http://www.yourdictionary.com/vsam>.
VSAM. (n.d.). Retrieved June 22nd, 2018, from http://www.yourdictionary.com/vsam
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