I’m working on a Computer Science writing question and need support to help me study.
Let relations r(A, B, C) have the following properties: 40 GB file size, block size is 4KB, each block stores 40 records.
Assume A is a key attribute, and B is a non-key attribute, the number of distinct values on B equals the number of tuples divided by 100.
Assume the fanout of the node for B+ tree is 100 (n=100). There are two dense indices, i.e., the index on A has the same number of index entries as the number of tuples in r, and the index on B has the same number of entries as the number of distinct values on B.
Assume the average disk seek time is 5 milliseconds, and the block transfer time is 0.1 milliseconds.
Select with an equality condition on the attribute A or B. v1 and v2 are the lookup values on A and B, respectively. For the selection on B=v2, there are 100 matching tuples.
Answer the following questions.
How many tuples are there in relation r?
What are the heights of trees for indices on A and B, respectively?
Suppose the selection on A=v1, and relation r is sorted on attribute A.
Suppose the selection on A=v1, and relation r is sorted on attribute B.
Suppose the selection on B=v2, and relation r is sorted on attribute B.
Suppose the selection on B=v2, and relation r is sorted on attribute A.
Suppose the selection on A=v1, and relation r is not sorted.
Suppose the selection on B=v2, and relation r is not sorted.
For the following selection operations, consider which selection algorithm applies for each case, and find the number of block transfers, the number of seeks, and the cost, respectively:
Please also fill your answers for questions c-h in the table below.
Student has agreed that all tutoring, explanations, and answers provided by the tutor will be used to help in the learning process and in accordance with Studypool’s honor code & terms of service.
Get professional assignment help cheaply
Are you busy and do not have time to handle your assignment? Are you scared that your paper will not make the grade? Do you have responsibilities that may hinder you from turning in your assignment on time? Are you tired and can barely handle your assignment? Are your grades inconsistent?
Whichever your reason may is, it is valid! You can get professional academic help from our service at affordable rates. We have a team of professional academic writers who can handle all your assignments.
Our essay writers are graduates with diplomas, bachelor, masters, Ph.D., and doctorate degrees in various subjects. The minimum requirement to be an essay writer with our essay writing service is to have a college diploma. When assigning your order, we match the paper subject with the area of specialization of the writer.
Why choose our academic writing service?
Plagiarism free papers
Timely delivery
Any deadline
Skilled, Experienced Native English Writers
Subject-relevant academic writer
Adherence to paper instructions
Ability to tackle bulk assignments
Reasonable prices
24/7 Customer Support
Get superb grades consistently
Get Professional Assignment Help Cheaply
Are you busy and do not have time to handle your assignment? Are you scared that your paper will not make the grade? Do you have responsibilities that may hinder you from turning in your assignment on time? Are you tired and can barely handle your assignment? Are your grades inconsistent?
Whichever your reason may is, it is valid! You can get professional academic help from our service at affordable rates. We have a team of professional academic writers who can handle all your assignments.
Our essay writers are graduates with diplomas, bachelor’s, masters, Ph.D., and doctorate degrees in various subjects. The minimum requirement to be an essay writer with our essay writing service is to have a college diploma. When assigning your order, we match the paper subject with the area of specialization of the writer.
Why Choose Our Academic Writing Service?
Plagiarism free papers
Timely delivery
Any deadline
Skilled, Experienced Native English Writers
Subject-relevant academic writer
Adherence to paper instructions
Ability to tackle bulk assignments
Reasonable prices
24/7 Customer Support
Get superb grades consistently
How It Works
1. Place an order
You fill all the paper instructions in the order form. Make sure you include all the helpful materials so that our academic writers can deliver the perfect paper. It will also help to eliminate unnecessary revisions.
2. Pay for the order
Proceed to pay for the paper so that it can be assigned to one of our expert academic writers. The paper subject is matched with the writer’s area of specialization.
3. Track the progress
You communicate with the writer and know about the progress of the paper. The client can ask the writer for drafts of the paper. The client can upload extra material and include additional instructions from the lecturer. Receive a paper.
4. Download the paper
The paper is sent to your email and uploaded to your personal account. You also get a plagiarism report attached to your paper.
PLACE THIS ORDER OR A SIMILAR ORDER WITH Essay fount TODAY AND GET AN AMAZING DISCOUNT
The post Computer Science writing question appeared first on Essay fount.
What Students Are Saying About Us
.......... Customer ID: 12*** | Rating: ⭐⭐⭐⭐⭐"Honestly, I was afraid to send my paper to you, but you proved you are a trustworthy service. My essay was done in less than a day, and I received a brilliant piece. I didn’t even believe it was my essay at first 🙂 Great job, thank you!"
.......... Customer ID: 11***| Rating: ⭐⭐⭐⭐⭐
"This company is the best there is. They saved me so many times, I cannot even keep count. Now I recommend it to all my friends, and none of them have complained about it. The writers here are excellent."
"Order a custom Paper on Similar Assignment at essayfount.com! No Plagiarism! Enjoy 20% Discount!"
