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1. Identify the comparisons and exchanges made to sort the following array using the selection exchange sort technique. Note: you may not need all columns.
Original
Array
1st
Pass
2nd
3rd
4th
5th
6th
7th
8th
9th
12
63
45
5
18
40
32
2. Use the table below to show the values in a stack after executing each of the following instructions. What is the value of the stack pointer after all of the executions have been completed? Note: There is only 1 stack. You are showing the changes in the stack values as each number is pushed onto or popped from the stack.
Push 12; Push 45; Push 47; Push 21; Pop X; Push 83; Pop X; Pop X; Push 32
3. Use the table below to show the values in a queue after executing each of the following instructions. Note: There is only 1 queue. You are showing the changes in the queue values as each number is added to or deleted from the queue.
Add 12; Add 45; Add 47; Add 21; Delete X; Add 83; Delete X; Delete X; Add 32
Primary index A primary index is a file that has a sorted series of records having two columns: a block address for that key field in the data file; and the ordering key field.
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What is the use of Union and intersection operation? Union: The result of this operation contains all tuples that are either in r1 or in r2 or in both r1 and r2.Duplicate tuple
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