Database System Concepts
7th Edition
ISBN: 9789332901384
Author: Henry F. Korth & S. Sudarshan Abraham Silberschatz
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 13, Problem 9E
Explanation of Solution
a.
The stored offset and length of field:
- The null values are used to indicate that the value is not present in the current location.
- The null values can be indicated by a space or zero or any other default value...
Explanation of Solution
b.
Modification of records:
- It should be able to locate the null bitmap and the offset and length values of non-null attributes using the null bitmap.
- This can be done by storing the null bitmap at the beginning and then for non-null at...
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hi, I need help to resolve the case, thank you
The following table shows the timestamp and actions by two users. Choose the best option that describes the outcome of the actions.
Time JohnSara
10:14 select* from hr.employees;
10:15 Update hr.employees set salary= 100
where employee_id= 206;
10:16 Commit:
Select* from hr.employees;
10:18 Commit:
10:20 Select* from hr.employees;
Commit:
John's query willreturn the same results all three times it is executed as they are run in the same session.
John's queries run at10:16 and10:20 produce the same result, which is different from the one at 10:14
John's query run at 10:16 waits until 10:18 to produce results, waiting for the commit to happen.
John's queries run at 10:14 and 10:16 produce the same result, which is different from the one at 10:20
what's the process used to obtain IP configuration using DHCP in Windows Server.
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