Harvard University Programming Languages Questions

Question Description

I’m working on a programming writing question and need an explanation and answer to help me learn.

SQL is called a declarative language. Describe the pros and cons of a declarative language compared to an imperative language (e.g., C/C++)Hash can be slower than binary search. Describe the reason why.Assume you want to implement a parallel hash join. You can use 1000 CPU cores and all the data can fit in DRAM. Describe how you implement it. You need to consider not only search but also hash table construction. Locking should be necessary for parallel building, and an efficient locking system should be preferred. Describe why DSM is more efficient than NSM for aggregate operation.When you have N relational tables, how many plans do you have in theory? When making a query processing pipeline, if you adopt the Volcano method, then you can reduce memory consumption size, which is nice. Then, explain the negative aspect of this method. If you adopt a just-in-time compilation method, then you generate C language from SQL online, dynamically. The code generation time can be long, but this method is popular in modern databases. Explain the reason why. Explain false positive and false negative.In today’s world where software is eating the world, data platforms (DPFs) to manage data are critical. Both GAMA/BATH have their own DPFs. How would a country or an organization without DPF technology be in trouble? Please state your thoughts.Consider an application of eBPF.

Explanation & Answer:
10 questions

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.

Looking for this assignment?

do my essay homework

Reviews, comments, and love from our customers and community

Article Writing

Great service so far. Keep doing what you do, I am really impressed by the work done.



PowerPoint Presentation

I am speechless…WoW! Thank you so much! Definitely, the writer is talented person. She provided me with an essay a day early before the due date!

Stacy V.

Part-time student

Dissertation & Thesis

This was a very well-written paper. Great work fast. I was in pretty desperate need for help to finish this paper before the due date, which was in nine hours.

M.H.H. Tony


Annotated Bibliography

I love working with this company. You always go above and beyond and exceed my expectations every time. Kate did a WONDERFUL job. I would highly recommend her.

Francisca N.


Book Report / Review

I received my order wayyyyyyy sooner than I expected. Couldn’t ask for more. Very good at communicating & fast at replying. And change & corrections she put in the effort to go back and change it!

Mary J.


Essay (Any Type)

On time, perfect paper. All concerns & matters I had Tom was able to answer them! I will definitely provide him with more orders!

Prof. Kate (Ph.D)


Case Study

Awesome! Great papers, and early! Thank you so much once again! Definitely recommend to trust James with your assignments! He won’t disappoint!

Kaylin Green


Proofreading & Editing

Thank you Dr. Rebecca for editing my essays! She completed my task literally in 3 hours. For sure will work with her again, she is great and follows all instructions

Rebecca L.


Critical Thinking / Review

Extremely thorough summary, understanding and examples found for social science readings, with edits made as needed and on time. It’s like having a tutoring service available (:

Arnold W.



Perfect!I only paid about $80, which i think was a good price considering what my paper entailed. My paper was done early and it was well written!

Joshua W.


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes:

<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>