Question 1 :
Resource locking is a process to prevent multiple applications from obtaining copies of the same record when the record is about to be changed.
Question 2 :
The overall responsibility of the DBA is to facilitate the development and use of the database.
Question 3 :
The size of the lock is referred to as the lock granularity.
Question 4 :
A durable transaction is one in which all committed changes are permanent.
Question 5 :
An ACID transaction is one that is atomic, consistent isolated, and durable.