Sumit Mittal
Hey!
I'm Sumit Mittal - Founder & CEO of TrendyTech.
I transform the careers of Big data aspirants through my carefully curated masters program to help them evolve into Big data experts. I have put in my wholehearted effort to present to you the best online big data course through the experience gained by having worked on multiple challenging Big data projects as an EX-CISCO and VMware employee.
The journey began in 2018 with my passion for teaching. Started by training a few working professionals, and eventually quit my high-paying job to pursue my passion and to bring about a change in the professional lives of many.
I have incorporated effective learning approaches to master Big Data that have been assimilated over the years as an alumni of top educational organizations like NIT Trichy, BITS Pilani, and IIIT Bangalore.
Link to my website: trendytech.in
Sumit Mittal
One of the most important topic for SQL Interviews is Group By & Having Clause.
Today I will be releasing a full 100 minutes video for the same.
Once you see that, you can crack the hardest of Interviews & your confidence will be just next level.
This is one of the most important video in the entire SQL Superstar program.
This end to end video will be released at 7 PM today.
I hope you all are enjoying your learning.
3 days ago | [YT] | 97
View 7 replies
Sumit Mittal
Why Most RAG Projects Fail Before They Even Start
I once reviewed a project where a team used a powerful LLM but got poorly aligned answers.
The issue was not the LLM.
It was the pipeline.
They had taken a Few thousand pages document, split it into random chunks, and stored it in a vector DB.
No metadata.
No cleaning.
No structure.
No consistency.
The LLM was doing its job.
The pipeline was not.
A production RAG system requires decisions at every layer.
What chunk size should you choose
Should you use fixed-size or semantic chunking
What metadata improves filtering
Which embedding model suits your domain
How many chunks should be retrieved
Which vector DB fits your scale
What context-window does your model support
How do you evaluate responses objectively
When all these decisions come together, the system feels magical.
When even one layer breaks, the entire solution becomes unreliable.
People think Gen AI is about the LLM.
It is not.
It is about designing the complete flow around the LLM.
That is what makes a Data Engineer truly valuable today.
If you want to learn Gen AI in a way like never before, then DM me to know about my Gen AI program starting tomorrow.
#genai
6 days ago | [YT] | 39
View 8 replies
Sumit Mittal
Hello Friends welcome again :)
Hope you all are enjoying the SQL Course.
14 Days have been released.
Also the portal would be helping you all.
The Day 15 will be released tomorrow (Saturday).
In the meantime you can revise the sessions and attempt the quizes.
Happy Learning!
6 days ago | [YT] | 56
View 5 replies
Sumit Mittal
The enrolments for my Free 50-Days SQL Superstar Program will close soon.
Over 3000 candidates have enrolled for it.
If you’ve been planning to start, this is the best time.
All video sessions, notes, datasets, quizzes, and certificates are already organised on the learning portal.
Once the window closes, new registrations won’t be accepted.
Enrol here: lnkd.in/giyJuJeG
These 50 Days can change your life!
#sql #database #dataengineering
1 week ago | [YT] | 48
View 14 replies
Sumit Mittal
who all are successfully able to use the portal?
I hope it will enhance the learning experience.
1 week ago | [YT] | 34
View 2 replies
Sumit Mittal
In college, I always struggled with ACID properties in DBMS.
I knew the full form.
Atomicity, Consistency, Isolation, Durability.
But honestly, none of it made sense to me back then.
I only understood it properly years later, while working on real systems at Cisco.
Let me explain it the way I finally understood it.
Imagine you have a savings account with 25,000 in it.
Your bank needs you to maintain a minimum balance of 5,000.
And you are transferring some amount to a friend.
A transfer has two steps.
Money goes out of your account.
Money goes into your friend’s account.
If the first happens and the second fails,
you end up losing money
and your friend still doesn’t receive anything.
That is an inconsistent and unfair state for the system.
Atomicity simply means
both steps must succeed together
or none of them should happen.
Consistency means
your transfer should not break the rules of the system.
If you try to send your full 25,000
your balance becomes zero
which violates the minimum 5,000 requirement.
So the system should not allow it.
Isolation is about timing.
Your account gets debited at one moment.
Your friend gets credited a little later.
If someone checks the balances in between,
they should not see half-done data.
They should either see the situation before the transfer
or after the transfer,
but never the messy middle.
Durability is the simple idea
that once the money has been transferred and committed,
it should never be lost
even if there is a crash or power failure.
That’s ACID.
The real version.
The version that finally clicked for me.
If you want me to simplify more concepts like this,
tell me which one I should take up next.
P.S. My new Data Engineering batch starts this Saturday. DM to know more!
#bigdata #sql #dataengineering
1 week ago | [YT] | 88
View 10 replies
Sumit Mittal
Who all have logged in to the portal?
Have you given the quiz?
I am sure this will make your learning super streamlined, all things at one place.
1 week ago | [YT] | 44
View 5 replies
Sumit Mittal
In just a day, more than 1200 learners have enrolled in the Free SQL Superstar Program
Over 250 have already taken the Day 1 quiz.
The response has been incredible.
What is helping most learners is the portal.
Everything they need is now in one place:
- Video links
- Notes
- Datasets
- Daily quizzes
- Certificates
No scattered resources.
Just a simple, structured path to follow each day.
A quick update on today's progress:
Day 2 quiz is now available on the portal.
Day 12 video has been released on YouTube.
If you haven’t joined yet, you can enrol here:
trendytech.in/enroll-for-sql-super-star-course-by-…
Consistency is all you need for the next 50 days.
The rest is already taken care of.
1 week ago | [YT] | 32
View 1 reply
Sumit Mittal
In just a day, more than 1200 learners have enrolled in the Free SQL Superstar Program
Over 250 have already taken the Day 1 quiz.
The response has been incredible.
What is helping most learners is the portal.
Everything they need is now in one place:
- Video links
- Notes
- Datasets
- Daily quizzes
- Certificates
No scattered resources.
Just a simple, structured path to follow each day.
A quick update on today's progress:
Day 2 quiz is now available on the portal.
Day 12 video has been released on YouTube.
If you haven’t joined yet, you can enrol here:
trendytech.in/enroll-for-sql-super-star-course-by-…
Consistency is all you need for the next 50 days.
The rest is already taken care of.
#sql
1 week ago | [YT] | 29
View 4 replies
Sumit Mittal
Eagerly waiting for the first 3 students to post the Day 1 certificate of SQL free youtube course on LinkedIn
I will personally connect with them to see how their learning is going on.
1 week ago | [YT] | 50
View 3 replies
Load more