DATABASE SYSTEMS-MINDTAPV2.0
13th Edition
ISBN: 9780357427873
Author: Coronel
Publisher: CENGAGE L
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Chapter 10, Problem 4RQ
Explanation of Solution
List of transaction properties:
The transaction process has the list of properties in each individual transaction. The transaction must display these properties for consistent state. They are:
- Atomicity
- Consistency
- Isolation
- Durability
These above four transactions are referred as ACID test. The other additional transaction property is “Serializability”.
Explanation of transaction properties:
Atomicity:
- This property requires all part of the transaction (SQL commands) must be completed. Otherwise, the transaction is aborted. \
- For example: if the transaction T2 has three SQL commands, all three commands must successfully complete in the transaction. If not it is considered as inconsistent state. Hence, the atomicity property ensures the consistent state of the transaction.
Consistency:
- The property indicates the permanence of
database consistency. If the transaction is completed, the database will move one consistent state to another consistent state.
Isolation:
- This property is used for database transaction and the data item is accessed but one transaction cannot be accessed by any other transactions until the first one ends...
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using r language
Programming Problems
9.28
Assume that a system has a 32-bit virtual address with a 4-KB page size.
Write a C program that is passed a virtual address (in decimal) on the
command line and have it output the page number and offset for the
given address. As an example, your program would run as follows:
./addresses 19986
Your program would output:
The address 19986 contains:
page number = 4
offset = 3602
Writing this program will require using the appropriate data type to
store 32 bits. We encourage you to use unsigned data types as well.
Programming Projects
Contiguous Memory Allocation
In Section 9.2, we presented different algorithms for contiguous memory allo-
cation. This project will involve managing a contiguous region of memory of
size MAX where addresses may range from 0 ... MAX - 1. Your program must
respond to four different requests:
1. Request for a contiguous block of memory
2. Release of a contiguous block of memory
3. Compact unused holes of memory into one single block
4.…
using r language
Chapter 10 Solutions
DATABASE SYSTEMS-MINDTAPV2.0
Ch. 10 - Prob. 1RQCh. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Prob. 4RQCh. 10 - Prob. 5RQCh. 10 - Prob. 6RQCh. 10 - Prob. 7RQCh. 10 - Prob. 8RQCh. 10 - Prob. 9RQCh. 10 - Prob. 10RQ
Ch. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - Prob. 13RQCh. 10 - Prob. 14RQCh. 10 - Prob. 15RQCh. 10 - Prob. 16RQCh. 10 - Prob. 17RQCh. 10 - Prob. 1PCh. 10 - Prob. 2PCh. 10 - Prob. 3PCh. 10 - Prob. 4PCh. 10 - Prob. 5PCh. 10 - Prob. 6PCh. 10 - Prob. 7PCh. 10 - Prob. 8PCh. 10 - Prob. 9PCh. 10 - Prob. 10PCh. 10 - Prob. 11P
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