Database Management Systems Mcqs

Page No. 74

In the __________ phase, the system replays updates of all transactions by scanning the log forward from the last checkpoint.


aRepeating


bRedo


cReplay


dUndo


View Answer Redo

____________ using a log record sets the data item specified in the log record to the old value.


aDeferred-modification


bLate-modification


cImmediate-modification


dUndo


View Answer Undo

If database modifications occur while the transaction is still active, the transaction is said to use the ___________technique.


aDeferred-modification


bLate-modification


cImmediate-modification


dUndo



If a transaction does not modify the database until it has committed, it is said to use the ___________ technique.


aDeferred-modification


bLate-modification


cImmediate-modification


dUndo


View Answer Deferred-modification

The current copy of the database is identified by a pointer, called ____________ which is stored on disk.


aDb-pointer


bUpdate log


cUpdate log records


dAll of the mentioned


View Answer Db-pointer

The ____________ scheme uses a page table containing pointers to all pages; the page table itself and all updated pages are copied to a new location.


aShadow copy


bShadow Paging


cUpdate log records


dAll of the mentioned


View Answer Shadow Paging

In the ___________ scheme, a transaction that wants to update the database first creates a complete copy of the database.


aShadow copy


bShadow Paging


cUpdate log records


dAll of the mentioned


View Answer Shadow copy

The log is a sequence of _________ recording all the update activities in the database.


aLog records


bRecords


cEntries


dRedo


View Answer Log records

Which of the following causes system to crash


aBug in software


bLoss of volatile data


cHardware malfunction


dAll of the mentioned


View Answer All of the mentioned

The database is partitioned into fixed-length storage units called


aParts


bBlocks


cReads


dBuild


View Answer Blocks

Goto Page No.

Page 74 of 101

Alphabetical MCQs Categories

Here below You find all kind of categories of MCQs in alphabetical order.


"Comprehensive Collection of MCQs: Alphabetically Organized by Subject"

"Discover an extensive collection of multiple-choice questions (MCQs) neatly categorized by subject from A to Z. This resource is designed for anyone eager to explore various topics in a straightforward and organized manner. Whether you're a student preparing for exams, an educator seeking supplementary materials, or simply curious about different subjects, this compilation offers a convenient way to learn and assess your knowledge. With questions arranged alphabetically, navigation is effortless, allowing you to delve into subjects of interest at your own pace. Engage, learn, and expand your understanding with this accessible and comprehensive repository of MCQs!"


BolPakistan

bolpakistan.com.pk includes Job Mcqs and Pak Mcqs is the Top Largest Mcqs Forum in World, in which you can read Mcqs of All Subjects, PPSC test preparation, FPSC, NTS and PPSC PAST PAPERS, PPSC PAST MCQS. A Collection of Repeated MCQs for JOBs seekers.

Copyright © 2024, Designed & Developed by BolPakistan