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 mentionedI had been asked this question in unit test.I would like to ask this question from Recovery in chapter Recovery System of Database Management

The current copy of the database is identified by a pointer, called __

1.	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 mentionedI had been asked this question in unit test.I would like to ask this question from Recovery in chapter Recovery System of Database Management
Answer» The CORRECT answer is (a) Db-pointer To explain: 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.

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