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Database Systems 6th Edition by Ramez Elmasri, Shamkant B. Navathe
Edition 6ISBN: 0136086209Database Systems 6th Edition by Ramez Elmasri, Shamkant B. Navathe
Edition 6ISBN: 0136086209 Exercise 2
Exercise 20.14
Figure 20.2
Change transaction T2 in Figure 20.2b to read:
read_item(X);
X:= X+M;
if X > 90 then exit
else write_item(X);
-Repeat Exercise 20.14 adding a check in T1 so that Y does not exceed 90.
Figure 20.2Change transaction T2 in Figure 20.2b to read:
read_item(X);
X:= X+M;
if X > 90 then exit
else write_item(X);
-Repeat Exercise 20.14 adding a check in T1 so that Y does not exceed 90.
Explanation
Verified
Verified
T1 T2
read_item(X);
X := X-N;
read_item(X)...
Database Systems 6th Edition by Ramez Elmasri, Shamkant B. Navathe
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