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Database Management Systems, End Term

May 2024 term, 1 Sept 2024, Set QDF3

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ER diagram (Figure 1: Library) with entities Student, Book and Author, relationships Reads and Writes, attributes Student-ID, name, Email, Author-ID, name, country, ISBN, Title, Author-ID, Year, followed by the question text Figure from the original question paper Consider the following monthly backup schedule used by a company: | Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday | |---|---|---|---|---|---|---| | 1/ Full | 2/ Incremental | 3/ Incremental | 4/ Incremental | 5/ Incremental | 6/ Incremental | 7/ Differential | | 8/ Incremental | 9/ Incremental | 10/ Incremental | 11/ Incremental | 12/ Differential | 13/ Incremental | 14/ Incremental | | 15/ Incremental | 16/ Incremental | 17/ Differential | 18/ Incremental | 19/ Incremental | 20/ Incremental | 21/ Incremental | | 22/ Differential | 23/ Incremental | 24/ Incremental | 25/ Incremental | 26/ Incremental | 27/ Incremental | 28/ Incremental | | 29/ Incremental | 30/ Incremental | | | | | | If a failure occurs on the 15th day of the month after the backup has been completed, how many backup sets have to be loaded for a full recovery?