What is ETL | What is Data Warehouse | OLTP vs OLAP

[@codebasics]

Do you want to learn technology from me? Check codebasics.io/ for my affordable video courses.

[@mohammadsyariefali2978]

I've watched 3 videos before this and no one explained it as good, fast, and clear as you do. Thank you!

[@codebasics]

You're very welcome! Glad it was helpful!

[@sumitpatil9648]

I went through lots of Google search and read this topic but it was not clear to me but you made it very simple and I got overall idea of main 3 topics 1) ETL 2) DW and 3) OLTP &OLAP just in 8 minutes ...Thank you

[@codebasics]

👍☺️

[@anika7277]

I totally agree , I was looking for something that gives us an overall idea and this video did the job !!!

[@gracechan3039]

Wow, you're a really great teacher. It's very clear and concise. Thank you!

[@codebasics]

Glad it was helpful!

[@jithindas6084]

Felt like I got 20 pages worth of information in just 8 mins, thank you so much!

[@codebasics]

Great to hear!

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[@pattapukhannaji780]

excellent over view for ETL learners. I've watched similar videos before this and no one explained it as good, fast, and clear as you do. Thank you so much.

[@codebasics]

Glad it was helpful!

[@sahilkadu5409]

ur really great teacher. I learnt a whole warehouse tool without understanding what warehouse and ETL actually does is. and here this 8 min video explained me in the best way possible.

[@codebasics]

👍👍🤗🙏

[@naturelovers457]

I remember this was first video i saw and i decided to become ETL developer after seeing that video just clear some concepts from that day to now after lots of hardwork a ETL developer. Working on talend, matillion, informatica and abinitio. This journey is quite amazing.

[@codebasics]

Great to hear! 👍

[@SpaceMusicOutofWorld]

You explained it clearly in 8 minutes!! My teacher took one hour of our times to explain the difference, and he failed to.

[@codebasics]

👍👍👍

[@vanshverma2115]

My god, this is by far the best explanation of all those jargons. Very well explained sir. Thank you very much. Best wishes to you.

[@SK-kg6en]

This man is a genius. Summarised so much in a single go. Thank you and keep up doing the good work!

[@guidocasella2066]

never heard so much clear than like you are explaining, thanks mate! greetings from argentina

[@ЕвгенийГеров]

The best explanation of OLTP and OLAP I have watched in YT so far. Thanks a lot, bro

[@flamboyantperson5936]

This is the best tutorial given by you because nobody has so far touched it

[@p.sarankumarpatro9773]

In a span of time I got a descriptive knowledge about ETL .Thank you.

[@johnblackstockmusic]

Appreciate this video! We're learning ETL in my Business Intelligence class and this summed up an entire chapter in 8 minutes!

[@codebasics]

Glad it helped John

[@rayray7244]

I'm telling you if I had to do it over again I'd get my education from KZbin and Udemy! Would've saved me 100k in student loan.

[@anirbanc88]

you are the best teacher, ever! thank you for making videos on youtube, i may become somebody because of the help from your videos

[@career-calling]

Great job simplifying concepts in plain English which is the need of the hour in today's jargon-filled world. Thank You.

[@codebasics]

Thank you so much for your kind words!

[@pranaykumarperla1224]

i have watched no of videos on OLAP and OLTP, i am not 100 % sure. But by watching your video i got full clarity sir.

[@codebasics]

Glad to hear that

[@codebasics]

So glad it resonated with you! 😊

[@samdawg12]

You helped me understand OLAP in 5 minutes. Thank you so much, Dhaval.

[@codebasics]

👍☺️

[@tylerdurden9411]

I really like your explanation very clear and with examples. Thank you so much men!!!!!! I almost forget your english speaking is so good thank you also for that, because is an extra effort and that give you extra points also!!!!

[@sowmya6471]

Extreamly useful. A quick brush up video for interview preparations. I had a very complex understanding on these concept. Now its 100% clear.

[@ashcb77]

Wonderful exaplanation Mr Dhawal... Quite impressive .. I'm a new aspiriant of Data Analytics serching for genuien content for understaing the process of Data Analytics, which landed me on ur channle. Thanks for imparting ur valuable knowledge.

[@porrasbrand]

What a Great and simple explanation - finally - after so many videos that are so complicated and with youtubers showing their faces and talking talking talking and they don't go to the poin. This was on the point !! Directly and Well Explained!! Great!!

[@hall_of_fame_suraj]

really great explanation know one is not in youtube that they are properly cleared this topic with the right examples, but you have done.

[@equiwave80]

Excellent video. Simplest explanation of OLTP, OLAP, ETL & Data warehouse

[@codebasics]

Glad it was helpful!

[@Jean-PaulCh]

I just wanted to say that I was really impressed by the way you explained this. Keep it up.

[@lucashonore6941]

Do you have interview questions for data governance? I like the way you explain.. You're definitely a great teacher.

[@lcsmrt]

I don't usually comment on videos, but this one deserves the effort. What a great explanation. Congrats

[@codebasics]

Glad you liked it!

[@MohamedSaid-ob3ug]

Simple explaination of the relation between ETL en Data warehouse. THNX!!

[@tejrupsai7396]

The best explanation that I have ever seen it's very simple to understand and most of the information has been explained within few minutes.

[@sumanthaddala6924]

Thank you very much sir🙏, the concept which you've explained is crystal clear, very calm and on point without fogging brain.

[@trikavyam8101]

Very good explanation.....before this video i had lot of confusion on elt but now its very clear...thanks

[@anika7277]

Very Clear , Concise and to the point explanation. Thanks so much !!!!

[@bouihabdelouahed1579]

I love the way you explained it all. Very much appreciated mate.

[@mindlospikiri7723]

The best explanation on youtube

[@ravikishorergajavalli]

Nice explanation. Non IT guy can easily understand the basic information about all these terminology. Thank you for sharing your knowledge.

[@sohelakhtar8044]

So precise, accurate and smooth. Cleared the concept very well

[@codebasics]

Glad it was helpful!

[@krishnachaitanya5965]

This is the best video I've seen so far. Great content for beginners.

[@shahariarsarkar3433]

Please upload a video on implementing a data warehouse practically using the tools like teradata etc.

[@wallysonruan4246]

As some already said, I've watched lots of video before landing here but you were the one to make me go "mind blowing". Thanks a lot, man! Special compliments for the way you designed your representation of the pipeline as well as the difference between OLTP and OLAP!

[@shuaidongyu4010]

The best explanation on data warehouse. Thx!

[@UKXcalibur]

that war really clarifying, you explained the best!

[@jayasriravisankar4059]

Awesome video, As everyone said , i have watched several videos and several documents to learn these topics, None of them have cleared all my queries on my mind in regards to these terms, but you made me to understand it so easily. Thank you

[@yashmathur5609]

wow ,your teaching techniques are really good .. straight to mind concept

[@ahmadmarzodandy6054]

Amazingly cristal clear! Thank you so much for creating this video

[@tejas4054]

Best clarity no one is better than you

[@abhishekbhatia651]

BEST EXPLANATION EVER! Thankyou :)

[@rajeshbhosale2008]

Excellent video on the simplification of confusing jargons of the database domain! Thanks 👍🏻

[@danalex2991]

Best video for OLAP and OLTP concepts.

[@shreyasingh550]

One of the best explained videos on ETL so far. Looking forward to learning more from your videos

[@saikatnextd]

Wow !! Even a non techie like me can understand……awesome is a understatement !! Keep up the great work 👍👍

[@muskanvij4811]

This is one of the best video on this topic , I have come across.

[@codebasics]

👍😊

[@boppanibhanuprasad4612]

Simple crisp and clear. loved it!

[@saumyasrivastava4064]

10 out of 5 STAR for the explanation and the way you taught it. Compelled me to comment for the first time on any educational content. I really feel a teacher, a mentor should understand his audience first, talking about things in your jargons/terminology is easy but explaining it in a way where even a non-technical person can understand the business value behind it, is RARE. You absolutely did that! The way you started it with business case, added crisp context before bringing the jargon and then connected it all, was just super awesome. Please keep up the good work! Inspiring! P.S. Sorry, I understand the efforts that goes behind making these videos but mostly other videos (of other people) are like; you extract from database, you transform and then you load for analytical purpose - this is ETL. Such videos should add a disclaimer - intended for audience with tech background.

[@mohammadfaizanmadgaonwala51]

The best video with examples Thank you so much

[@readerko]

Thanks for this video, you are a very good teacher, it was really fast and simple to understand. Great work man. Greetings from Slovakia

[@Call-me-Avi]

This was the most awesome explanation i found. Thank you. I finally understand.

[@jessechichi5609]

i love how you have explained this, thank you.

[@sinan6212]

Thank you for the clear and simple explanation

[@emamulmursalin9181]

Simple, directly to the actual point and useful .....

[@Muskan-wi2zz]

That was a quite precise and clear explanation. It would have been even better if some hands on was also shown at the end.

[@minute_syntax]

Great video..never seen such a simple way of explaining ETL

[@codebasics]

Glad you liked it!

[@amritgurung3520]

this is what i wanted to know for few days. Amazing video. Really appreciated

[@AnkitChoudhary-st2is]

BEST OVERVIEW VIDEO, BIG THANKSS!

[@rssinghtoor]

Amazing, just amazing Tutorial!…subscribed your channel right away. Needed this for my work purpose. Thank you so much 🙏

[@MarkBelain]

At first, I disliked the video because I felt it was skirting around the actual core topic of ETL” Right around 5:30, though, everything you said came together and this just became one of the most elegant ways to explain ETL that I’ve seen so far. Suffice it to say, I went back and put a like back on the video.

[@codebasics]

Ha ha.. thanks mark for showing Patience 👍😊

[@Pablo-zf7ml]

Excellent video, short, clear and very informative....thanks a lot great job

[@madanchanti]

Best explanation with good understanding in less time. Thanks !

[@codebasics]

👍😊

[@esraaykut4022]

Thank you so much such an simple and great explanation!

[@nikitakhandelwal872]

Explained in a very simple manner.. Thanks a lot!

[@codebasics]

Glad it was helpful!

[@reggied1811]

Very good explanation. Helped me tremendously. Thanks!

[@codebasics]

Glad it helped!

[@pratikkumarsingh8114]

well explained, cleared all the concepts, Thank you sir!!

[@gwizdeq]

Best explanation on YT

[@yeahnahshityeah]

This is a perfect explanation! Thank you

[@ad3]

Clean and simple explanation. Thank you.

[@codebasics]

Glad it was helpful!

[@vaijayantigulve4883]

Very clear and concise...!! Thank you...

[@MubQ10]

hey man ! great stuff !! much better than the lecturers that i have here in the UK

[@AnilKumar-pb7eo]

Sir excellent explanation 👏👌 now I got clarity

[@fernandomendoza3876]

Thank you very much for the explanation. It was clear and concise.

[@codebasics]

Glad it was helpful!

[@tushararora6665]

I am amazed,it was so easy to understand,Thanks a ton.

[@codebasics]

You are most welcome

[@roshanramesh7307]

Beautifully explained. Thank you

[@thatguyadarsh]

Very easily explained... Awesome

[@JainmiahSk]

Hi Adarsh, thanks for complement. Checkout more videos from playlist. Keep sharing CodeBasics videos to your friends as #ImCodeBasicsMember

[@hassanosseiran6405]

Super well explained, great work!

[@mingfang6350]

I learned a lot from this video. Thank you very much. Do you have any suggestions on where we can find ETL project for fresh graduate to implement this?

[@nishaprabhudesai2714]

Thank you for sharing it so simply...makes it easy to understand!

[@akash-kaha-hai]

Well explained. You're a good teacher.

[@codebasics]

Glad it was helpful!

[@GLORYWAVE.]

im a bit confused. so first you said avoid querying the original databases so we don't slow anything down, but then you aggregated and normalize the data BEFORE sending it to a warehouse. Wouldn't this aggregation / normalization process require querying the original database? (e.g. SELECT WHERE Store Name = 'New York' -> then add them up -> then normalize) Thanks

[@harshithatm6369]

Thank you for keeping it simple and covering all necessary topics.

[@codebasics]

Glad it was helpful!

[@hanmuster]

This is a very vivid example!

[@codebasics]

Glad you liked it

[@mahmudhasan1503]

Wonderfully explained with easily understandable example. Thank you for sharing your knowledge.

[@codebasics]

Glad it was helpful!

[@abdelrahmanabumeree3903]

thanks a lot , useful video explain the main purpose of the ETL

[@gnanasuriyanramachandran9895]

Simple, neat and clear explanation. Thank you!!

[@codebasics]

🙏🙏👍👍

[@louvierejacques]

thank you so much, this is excellent! subscribed, now i'm off to check out your courses. really, really great.

[@AnjaliJaswal-u8t]

Such helpful information and explanation.

[@blackisblack22]

Where do you perform aggregations, in production server or stagging and if the later, are you raw copying all production records or filtering somehow?

[@draco1847]

I appreciate your teaching way

[@codebasics]

Thanks 👍

[@justwatching2960]

It is so clear and well explained. Thanks a lot.

[@danyalimtiaz6925]

Awesome! Simple and Clear. Thank you so much.