472,805 Members | 915 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 472,805 software developers and data experts.

Large-scale parallel database systems_test

I am recently studying database and face such a question:

Large-scale parallel database systems store an extra copy of each data item on disks attached to a different processor, to avoid loss of data if one of the processors fails.
a. Instead of keeping the extra copy of data items from a processor at a single backup processor, it is a good idea to partition the copies of the data items of a processor across multiple processors. Explain why.
b. Explain how virtual-processor partitioning can be used to efficiently implement the partitioning of the copies as described above.
c. What are the benefits and drawbacks of using RAID storage instead of storing an extra copy of each data item?

I am not sure whether the lase one is the best option. I thought it is the best but still need more
Mar 26 '20 #1
0 2823

Sign in to post your reply or Sign up for a free account.

Similar topics

by: T-Bird | last post by:
Extensive experience with UDB EEE in an UNIX AIX environment. Participate in modeling and design discussions of the DSA (Data Staging Area) and DM (DataMart).Implement Logical, Physical, and...
by: DeeBee2 | last post by:
Does DB2 UDB support parallel database i.e processing is taking place on multiple nodes at the same time allowing users to be active on more than one node simultaneously. This is to allow for...
by: Flic | last post by:
Is this possible? I know about a bit about ODBC and found how to import an ODBC database stored on the computer, however I am after accessing an SQL database stored on a webserver. I'd like to...
by: shsandeep | last post by:
The ETL application loaded around 3000 rows in 14 seconds in a Development database while it took 2 hours to load in a UAT database. UAT db is partitioned. Dev db is not partitioned. the...
by: lambert101 | last post by:
All, Running environment is non-partition database for datawarehouse with DB2 V8.2 on AIX. We have a few logical grouping of tables that we would like to load in parallel to save time. Each...
by: ianenis.tiryaki | last post by:
well i got this assignment which i dont even have a clue what i am supposed to do. it is about reading me data from the file and load them into a parallel array here is the question: Step (1) ...
by: John | last post by:
I have a program that needs to run on a regular basis that looks at a queue table in my database. If there are items in the queue database I need to grab the data from the database and pass it to...
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 2 August 2023 starting at 18:00 UK time (6PM UTC+1) and finishing at about 19:15 (7.15PM) The start time is equivalent to 19:00 (7PM) in Central...
by: kcodez | last post by:
As a H5 game development enthusiast, I recently wrote a very interesting little game - Toy Claw ((http://claw.kjeek.com/))。Here I will summarize and share the development experience here, and hope it...
by: Taofi | last post by:
I try to insert a new record but the error message says the number of query names and destination fields are not the same This are my field names ID, Budgeted, Actual, Status and Differences ...
by: DJRhino1175 | last post by:
When I run this code I get an error, its Run-time error# 424 Object required...This is my first attempt at doing something like this. I test the entire code and it worked until I added this - If...
by: Rina0 | last post by:
I am looking for a Python code to find the longest common subsequence of two strings. I found this blog post that describes the length of longest common subsequence problem and provides a solution in...
by: DJRhino | last post by:
Private Sub CboDrawingID_BeforeUpdate(Cancel As Integer) If = 310029923 Or 310030138 Or 310030152 Or 310030346 Or 310030348 Or _ 310030356 Or 310030359 Or 310030362 Or...
by: lllomh | last post by:
Define the method first this.state = { buttonBackgroundColor: 'green', isBlinking: false, // A new status is added to identify whether the button is blinking or not } autoStart=()=>{
by: Mushico | last post by:
How to calculate date of retirement from date of birth
by: DJRhino | last post by:
Was curious if anyone else was having this same issue or not.... I was just Up/Down graded to windows 11 and now my access combo boxes are not acting right. With win 10 I could start typing...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.