We need transactions management for system effectiveness.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Related questions
Question
![Question 1: True or False
Question
Answer
We need transactions management for system effectiveness.
In an E/R diagram, the relations cannot have their own keys.
In a database system, we use write-ahead logging to achieve concurrency.
We should avoid interleaving transactions.
A schedule with Write-Write conflicts cannot be converted to a serial
schedule.
In strict 2PL, the program cannot access to the data when there is a lock on
it.
We prefer RAM than Disk since it is durable.
The external merge sort algorithm can be complete with as little as two
buffer pages.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3935a5a6-1355-4442-a788-b5eb7b8f90d8%2F357b56c3-0ce7-4818-9b0d-07acd42b45f1%2F76oi1qu_processed.png&w=3840&q=75)
Transcribed Image Text:Question 1: True or False
Question
Answer
We need transactions management for system effectiveness.
In an E/R diagram, the relations cannot have their own keys.
In a database system, we use write-ahead logging to achieve concurrency.
We should avoid interleaving transactions.
A schedule with Write-Write conflicts cannot be converted to a serial
schedule.
In strict 2PL, the program cannot access to the data when there is a lock on
it.
We prefer RAM than Disk since it is durable.
The external merge sort algorithm can be complete with as little as two
buffer pages.
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