Assume that a database contains 7 pages and during the execution of a transaction page 5 and 1 are changed. Give the structures of the current directory and shadow directory before and after the transaction execution, respectively.
lee reeno (ريم خليل)التعليم والتدريب-Google إجابات-التعليم الجامعي-الجامعات-الكمبيوتر والإنترنت
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