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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
we need example of 2phase locking
Explain CNT in the respects of QBE ? CNT: It is one of the aggregation commands given in QBE. It is used to identify number of tuples
wh
Part: Recommended (Non-query) Optimisations This section entitled "Recommended (non-query) optimisations" should be a brief report containing recommended optimisations you would
A domain is a set of permissible values that can be given to an attribute. So each attribute in a table has a definite domain. Values to these attributes cannot be assigned outside
What is the disadvantage of a call by reference? During a call by reference damage or loss of data is not restricted to the subroutine, but will instantly lead to alters to th
Describe the difference between a one-to-many and a many-to-many relationship. Which logical data structures comprise one-to-many and which comprise many-to-many relationship?
What are the problems if one were not to normalize? When do these problems surface? Ans: Database normalization, sometimes considered to as canonical synthesis, is
UNION If R1 and R2 are two union compatible relations then R3 = R1 ∪ R2 is the relation having tuples that are either in R1 or in R2 or in both. In case, R3 will have tuples
Explain the concept of Modeling With Objects A model is a conceptual representation of a specification, design or system from a particular point of view. A modelling language
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