The current copy of the database is identified by a pointer, called _____________, which is stored on disk.
A. Db-pointer
B. Update log
C. Update log records
D. All of the mentioned
Answer:A
The current copy of the database is identified by a pointer, called _____________, which is stored on disk.
A. Db-pointer B. Update log C. Update log records D. All of the mentioned
Explanation:Any page which is not updated by a transaction is not copied, but instead the new page table just stores a pointer to the original page.