EBK DATABASE SYSTEM CONCEPTS
7th Edition
ISBN: 9781260049268
Author: SILBERSCHATZ
Publisher: MCG COURSE
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Chapter 18, Problem 10PE
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Practical applications of two-phase locking protocol
- Two-phase locking protocol is used for simple applications where a single granularity is accepted...
Explanation of Solution
Practical applications of two-phase locking with multiple granularity locking protocol
- It is used for applications where some applications access individual records and others access whole relations or substantial parts...
Explanation of Solution
Practical applications of tree protocol
- It is used for all applications that tend to access data items in an order consistent with a particular partial order...
Explanation of Solution
Practical applications of timestamp ordering protocol
- It is used if the application demands a concurrent execution that is equivalent to a particular serial ordering.
- Conflicts are handled by roll-back of transactions rather than waiting and schedules are also not recoverable...
Explanation of Solution
Practical applications of validation protocol
- If the probability of two conflict of two concurrently executing transaction is low, then this protocol can be used...
Explanation of Solution
Practical applications of multiversion timestamp ordering protocol
- It is used it timestamp ordering is appropriate...
Explanation of Solution
Practical applications of multiversion multiversion two phase locking protocol
- It allows read-only transactions to always commit without waiting.
- Update transactions follow two phase locking protocol and allows recoverable schedules with conflicts solved by waiting rather than roll-back...
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Students have asked these similar questions
Task 3.
i) Compare your results from Tasks 1 and 2.
j) Repeat Tasks 1 and 2 for 500 and 5,000 elements.
k) Summarize run-time results in the following table:
Time/size n
String
StringBuilder
50
500
5,000
Can you please solve this without AI
1. Create a Vehicle.java file. Implement the public Vehicle and Car classes in Vehicle.java, including all the variables and methods in the UMLS.
Vehicle
-
make: String
model: String
-year: int
+ Vehicle(String make, String, model, int, year)
+ getMake(): String
+ setMake(String make): void
+ getModel(): String
+ setModel(String model): void
+ getYear(): int
+ set Year(int year): void
+toString(): String
Car
- numDoors: int
+ numberOfCar: int
+ Car(String make, String, model, int, year, int numDoors)
+ getNumDoors(): int
+ setNumDoors (int num Doors): void
+ toString(): String
2. Create a CarTest.java file. Implement a public CarTest class with a main method. In the main method, create one Car object and print the object using
System.out.println(). Then, print the numberOfCar.
Your printing result must follow the example output:
make Toyota, model=Camry, year=2022 numDoors=4
1
Hint: You need to modify the toString methods in the Car class and Vehicle class!
Chapter 18 Solutions
EBK DATABASE SYSTEM CONCEPTS
Ch. 18 - Prob. 1PECh. 18 - Prob. 2PECh. 18 - Prob. 3PECh. 18 - Prob. 4PECh. 18 - Prob. 5PECh. 18 - Prob. 6PECh. 18 - Prob. 7PECh. 18 - Prob. 8PECh. 18 - Prob. 9PECh. 18 - Prob. 10PE
Ch. 18 - Prob. 11PECh. 18 - Prob. 12PECh. 18 - Prob. 13PECh. 18 - Prob. 14PECh. 18 - Prob. 17ECh. 18 - Prob. 18ECh. 18 - Prob. 19ECh. 18 - Prob. 20ECh. 18 - Prob. 21ECh. 18 - Prob. 22ECh. 18 - Prob. 23ECh. 18 - Prob. 24ECh. 18 - Prob. 25ECh. 18 - Prob. 26ECh. 18 - Prob. 27ECh. 18 - Prob. 28ECh. 18 - Prob. 29ECh. 18 - Prob. 30ECh. 18 - Prob. 31ECh. 18 - Prob. 32ECh. 18 - Prob. 33ECh. 18 - Prob. 34ECh. 18 - Prob. 35ECh. 18 - Prob. 36E
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