3. six transactions, t1 through t6, are requesting locks in a single-lock-mode system. here is the sequence of lock requests so far: 1. t1: lock a 2. t2: lock b 3. t3: lock c 4. t3: lock a 5. t4: lock d 6. t4: lock b 7. t5: lock e 8. t5: lock c 9. t6: lock f 10. t6: lock b draw the waits-for graph at this time. then, identify from the list below the request that will cause the requesting transaction to roll back. a) t2: lock f b) t1: lock b c) t2: lock a d) t2: lock b

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What are some ways to use a range name in a formula? check all that apply. in the defined names group, click use in formula, and then select the desired name. begin typing the name in the formula, select a name from the autocomplete list, and use the arrow keys and tab key to enter the name in the formula. begin typing the formula, and then click and drag with the mouse to select the cells to include in the formula. right-click one of the cells in the range. click formula options, and use the dialog box to add the name.

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