The Structured Query Language (SQL) 00:00 - Introduction to Database Systems 11:47 - SQL intro 59:31 - SQL: Simple Analysis 1:46:30 - Advanced SQL Features
Storing and Indexing Data 3:04:52 - Data Storage 3:54:05 - Tree Indexes 5:03:28 - Hash Indexes
Relational Data Processing 5:52:44 - Query Processing Overview 6:20:53 - Operator Implemenations 7:30:28 - Hash Join, Sort-Merge Join 8:30:34 - More Operators and Query Plans 9:06:02 - Query Optimization
Transaction Processing 10:40:23 - Transactions 11:00:22 - Isolation via Concurrency Control 12:16:03 - Two-Phase Locking 13:08:30 - More on Locking 14:12:53 - Concurrency Control Without Locking 15:06:23 - Recovery After System Crashes 1 15:59:12 - Recovery After System Crashes 2
From the bottom of my heart, THANK YOU for publishing this course. It has helped clarify so many concepts for me and helped build a very strong DBMS foundation.
1:55:46 - For anyone following along. The video games database from Kaggle has been updated, so column order will be different. Also notice: Professor Trummer is using NULL AS 'N/A', You might encounter an error where you cannot copy the CSV data into Postgres because of empty delimiters (,,,,), I suggest cleaning up the CSV file by issuing: sed -i -e 's/N\/A//g' yourfile.csv and using COPY yourtable FROM '/var/lib/postgresql/data/yourfile.csv' DELIMITER ',' NULL AS '' CSV HEADER; which should result in success.
Yay! I am literally starting my college course on Database Management System in a week after finsihed my Data Struct and Algo course. Now I can study in advance lol. Thank you for this
This video really helped me to get the clear understanding of the core concepts of the SQL. After watching this i solved two medium level SQL questions on leetcode, which i tried already but couldn't get the intuition before watching this video. This is a valuable content........
_"Educating for free"_ Inbound marketing for a four-year degree: $234,344.00. Classes on Decentering whiteness, Critical race theory, and Evils of capitalism: priceless.
BST type of index improves results by a factor of two, this factor can be increased using tree indexes and hash indexes. B+ Trees Index. Tree Index: Traverse search tree to find interesting leaf. Hash Index: Evaluate Hash functions to find buckets. Where to use Tree Indexes? Can be used if where clause uses equal or not equal predicate. Works if predicate references index key. Tree Indexes store data in root-leaf format. Similar data is stored closed together. Hence useful for both equality and inequality predicate. Hash Indexed store data in key:hash pair, similar value may hence be far apart. Hence useful for only equality predicate. Hash Index Variants: 1) Static Hashing(Bad for dynamic data) SS in folder. 2) Extendible Hashing (Expands with few high-overhead operations) 3) Lnear Hashing (Expands more "smoothly") About Data Storage: Data is stored in some physical hardware. More the memory of that, less is the volatility but so is the query time. Lesser the memory, more the volatility but lesser the query time. Volatility refers to recovery after failure. Data is stored as files, each file is further divided into slots which are further divided into fields. Buffer stores the most frequently possible used data to reduce the query time, it retains count of how many times the data was retrieved and if it goes below say 0 or a specified amount then that data is removed from buffer. Indexes- Refer to SS. Query Processing: Input query is parsed and simplified(Rewriter). Query optimizer generates optimized execution plan. Executing plan(Executor) produces query result. Operators in Query: 6:13:20
If I knew what I know now after spending thousands of dollars on a CS degree, I would start teaching myself front end development and data base back in freshman year and gradually learn data structure and algorithms along the way. Because now that I am a senior with no knowledge of web development just except copying and pasting of react code to get the project done, I feel pretty dumb compared to other self taught programmers who are actually familiar with different frameworks.
CS degrees teach fundamentals. I graduated with an EE/CS degree in 1995. The stuff today is very similar (Maybe a step down, we used C++, now they use Python or Java). No school is going to teach you react. Same way back then they wouldn't teach you Visual Basic or even MFC. They are teaching you academic CS, which gives you the power to quickly pick things up. But we did have an SQL course like this (I just jumped around in it, I'm using SQL now for all that time!). I did use FCC to learn React though!
Good short video, straight to the point! I'm kidding, but this video is of tremendous values. Thankyou everyone who has participated in this. Students, the teacher, the people working behind the scene, the editors. Thankyou from the bottom of my heart.
The course is informative and well structured but could you provide us with subtitles or enable the auto-generated subtitles. It would be very helpful.
I dropped this course on the first week. Looking back, this is the best decision I have ever made. Congradulations for making such an easy course so hard to understand.
I want to say that I appreciate your Video it is very informative and explanatory. I have two questions: What is the Database Management for? What are SQL Command Types used for
You're probably thinking: "Only 17 hours?" Actually the course is 25 hours. 😀Watch part 2 here: th-cam.com/video/lxEdaElkQhQ/w-d-xo.html
U are the best. Thank You!
@KEV IN The lectures are from a Fall 2020 online lecture at Cornell.
Some animals don't even live that long... 🤣
Nice & Great Resources...
Damn
The Structured Query Language (SQL)
00:00 - Introduction to Database Systems
11:47 - SQL intro
59:31 - SQL: Simple Analysis
1:46:30 - Advanced SQL Features
Storing and Indexing Data
3:04:52 - Data Storage
3:54:05 - Tree Indexes
5:03:28 - Hash Indexes
Relational Data Processing
5:52:44 - Query Processing Overview
6:20:53 - Operator Implemenations
7:30:28 - Hash Join, Sort-Merge Join
8:30:34 - More Operators and Query Plans
9:06:02 - Query Optimization
Transaction Processing
10:40:23 - Transactions
11:00:22 - Isolation via Concurrency Control
12:16:03 - Two-Phase Locking
13:08:30 - More on Locking
14:12:53 - Concurrency Control Without Locking
15:06:23 - Recovery After System Crashes 1
15:59:12 - Recovery After System Crashes 2
Thanks
thank you sooo much mate.!!!!
thank You
Awesome, thanks!
Thank you man
The fact that we are getting these courses for free is just amazing
You can support them too :)
@@prakash_77 indeed
Waiting for kids to argue that it isnt free because they get paid via ads...like bruh u are still watching it for free
Yeah, I hate that people just take it for granted
@@gavingonzalez7174 yeah me too
Where money is everything then there are some people really teach for free. I wish these people succeed in life.
GOD BLESS YOU ALL .... teachers who are enlighting the world with knowledge....
I am so thankful this is out in the public domain!
@@johnboikov1360
80 wee. %kids
Amen
From the bottom of my heart, THANK YOU for publishing this course. It has helped clarify so many concepts for me and helped build a very strong DBMS foundation.
what more can I say? You guys are blessed, sharing these valuable courses with us for free!
man did a 25-hour course in a library using a laptop and earphones
what a legend
it's not on a single day tho
are you british?
@@programmer9809 yeah duh, it's 25 hours, definetely took him more than one day. 1 hour more
I think there is his home
1:55:46 - For anyone following along. The video games database from Kaggle has been updated, so column order will be different. Also notice: Professor Trummer is using NULL AS 'N/A', You might encounter an error where you cannot copy the CSV data into Postgres because of empty delimiters (,,,,), I suggest cleaning up the CSV file by issuing: sed -i -e 's/N\/A//g' yourfile.csv and using COPY yourtable FROM '/var/lib/postgresql/data/yourfile.csv' DELIMITER ',' NULL AS '' CSV HEADER; which should result in success.
I swear when i get a job i will donate to this amazing site🙏
Gotten a job yet?
@@acrobat8233He is still watching I guess 😂😂
Thanks!
I mean 3-4 ads won't hurt,
Free content without ads, hatsoff
This is amazing, a full-fledged database course for free!
How is it ? Did you watched it full ?
Hey Shubham can you please tell me will this course completely cover all DBMS for gate exam?...
0:00 introduction to database Systems
7:32 Resources
8:40 there website
9:50 intro SQL
Bro gave up 💀
14:09 DDL Commands
42:57 DML Commands
59:17 SQL Simple Analysis
2:08:15 Null Value Discussion
5:39:40 Linear Hashing
It's wonderfull that there are people witch share wisdom. Now people with iron will and briliant mind could learn this beautifull concepts.
Such an amazing effort by FCC in the e-learning space
Thanks Guys it is really appreciated 🤝 🙏
awesome! thank you FCC, for this and for everything else! your efforts are highly appreciated!
17 hours, let’s go! Thanks for always sharing amazing resources!
Thank you for this!! this can help a lot people who are interested in this course but with no means to enroll to any university or online courses
This was the course I was missing for my interview 🥺! Thanks to you!
Yay! I am literally starting my college course on Database Management System in a week after finsihed my Data Struct and Algo course. Now I can study in advance lol. Thank you for this
This video really helped me to get the clear understanding of the core concepts of the SQL.
After watching this i solved two medium level SQL questions on leetcode, which i tried already but couldn't get the intuition before watching this video.
This is a valuable content........
I'm literally running out of reasons to go to college.
Good. You can save $200,000 and avoid Marxist brainwashing all in one move.
except for the companies that only hire you if you have a piece of paper saying you went to college
@@outhouse.wholesaler true
That's probably the only reason to go to college . To get that piece of paper that can be extremely valuable I'd say
Wish i’d found this before I’d have saved £9.25K
_"Educating for free"_
Inbound marketing for a four-year degree: $234,344.00.
Classes on Decentering whiteness, Critical race theory, and Evils of capitalism: priceless.
Salute to your effort FCC, always provide new content to learn.
How is it ? Did you watched it full ?
It's a great lecture. Thank you! 🥰
BST type of index improves results by a factor of two, this factor can be increased using tree indexes and hash indexes. B+ Trees Index.
Tree Index: Traverse search tree to find interesting leaf.
Hash Index: Evaluate Hash functions to find buckets.
Where to use Tree Indexes?
Can be used if where clause uses equal or not equal predicate. Works if predicate references index key.
Tree Indexes store data in root-leaf format. Similar data is stored closed together. Hence useful for both equality and inequality predicate.
Hash Indexed store data in key:hash pair, similar value may hence be far apart. Hence useful for only equality predicate.
Hash Index Variants:
1) Static Hashing(Bad for dynamic data)
SS in folder.
2) Extendible Hashing (Expands with few high-overhead operations)
3) Lnear Hashing (Expands more "smoothly")
About Data Storage:
Data is stored in some physical hardware. More the memory of that, less is the volatility but so is the query time.
Lesser the memory, more the volatility but lesser the query time. Volatility refers to recovery after failure.
Data is stored as files, each file is further divided into slots which are further divided into fields.
Buffer stores the most frequently possible used data to reduce the query time, it retains count of how many times the data was retrieved and if it goes below
say 0 or a specified amount then that data is removed from buffer.
Indexes- Refer to SS.
Query Processing:
Input query is parsed and simplified(Rewriter).
Query optimizer generates optimized execution plan.
Executing plan(Executor) produces query result.
Operators in Query: 6:13:20
If I knew what I know now after spending thousands of dollars on a CS degree, I would start teaching myself front end development and data base back in freshman year and gradually learn data structure and algorithms along the way. Because now that I am a senior with no knowledge of web development just except copying and pasting of react code to get the project done, I feel pretty dumb compared to other self taught programmers who are actually familiar with different frameworks.
CS degrees teach fundamentals. I graduated with an EE/CS degree in 1995. The stuff today is very similar (Maybe a step down, we used C++, now they use Python or Java). No school is going to teach you react. Same way back then they wouldn't teach you Visual Basic or even MFC. They are teaching you academic CS, which gives you the power to quickly pick things up.
But we did have an SQL course like this (I just jumped around in it, I'm using SQL now for all that time!). I did use FCC to learn React though!
Thanks free code camp for sharing this awsome course to people for free. You're awesome 😚
Free code camp saved the day again 'cause I have database systems exam tomorrow.
Better watch on double speed then. 😀 Good luck!
So thankful with this channel 💜 thank you so much!
This course is better than my course on College.
it's from cornell lol
TH-cam video player diff imo
Introduction to Database Systems, 17 hours. Let that sink in.
Good short video, straight to the point! I'm kidding, but this video is of tremendous values. Thankyou everyone who has participated in this. Students, the teacher, the people working behind the scene, the editors. Thankyou from the bottom of my heart.
is this course for begainers/engineers or is it a reffresh for concepts for studnets??
i have this course this semester.Timing could have never been so perfect.
Same here!
Hey Vinesh and manthan can you please tell does this cover complete DBMS syllabus for gate exam?
@@manthanthakkar6406 .
@@sevoysans1215 no this is based on the foreign syllabus i studied from "gate smashers" I was able to get good marks in my finals last sem for dbms
@@vigneshsenthil7980 yeah I am in dilemma whether to do gate smasher course or this one....the univ name is attracting me
Wow, what an upload!! 💪❤️
Neat , now I find out this course existed a week after I had an exam about Transactions.... welp atleast il get to use it for the final.
Awesome!!! And this is just part 1.
Deus abençoe vocês, God blessed you!!!
As much as I would love to watch all this in one sitting, it'd be nice to have timestamps, so that I can chunk my learning. Thanks, FCC!
Check the description, they always put the timestamp in there.
Aah, Shivaratri well spent !
😊
And my garmiyo ki chutti too🤣🤣
The least thing that I can say about this channel, it's amazing and generous
Thank You👍👍👍👍👍 Free Code Camp !!!!!
I have said this before and I will say this again, this channel is a godsend
How is it ? Did you watched it full ?
@@shizs8956 Didn't watch in full. I covered the SQL part. It is great.
@@bidhanbhattarai8863 thanks bro
The course is informative and well structured but could you provide us with subtitles or enable the auto-generated subtitles. It would be very helpful.
Thanks alot and God bless you all who are working selflessly
They hv some of the best teacher.
Thank you so much! Please make more videos on comp sci subjects like this!
Hey akhil...can you please tell me about the course...does it covers all the syllabus (DBMS) for gate exam
Thank You So Much!
Thanks. This platform is amazing
Incredible resource. Thank you!
Thanks for the slides, too!
Ty searching for this ❤️❤️
At 02:27:35, he missed the 'Group by' clause on the student name.
this is it, what a good time to learn. BIG THANKS !!!!!!
How is it ? Did you watched it full ?
this is so beautifully made
I can't say how much I'm thankful. Thank you so much, really thank you^^
WOW 😍😍💗 I love this channel 🚀
Well well well, they have 8 hours part 2 also,
Please do a course on system design and software architecture
Thank you again freeCodeCamp. Thank you.
Fortunately I took Harvard's CS50 Course, I can understand everything he is talking about.
Thank you for sharing this!
I dropped this course on the first week. Looking back, this is the best decision I have ever made. Congradulations for making such an easy course so hard to understand.
As usual for those pedants in the uni would do🤮
Very nice for the new student in database
Good & Awesome & waiting for the next part of 8 hours course
Thank you so much. Alway valuable .
I am happy that i found this course!! BUT ! I kinda need subtitles😌
Am I seeing this correct it's a 17+ hours of database course?! Awesome 😎 thank you!
Helped me in My PhD thesis thank you
Alexa, what is the definition of generosity?:
Alexa: FCC
Thank you for this knowledge. I appreciate it very much 🤗
Massive respect to you guys!
Hey Aryan is this course cover complete DBMS for gate exams
@@sevoysans1215 yes bro
@@aryanpokharel1181 thankyou bro...is it good for gates though?
Traditional Universities: "Our end is near, I can see it"😂
Good work freecodecamp. Keep up!
You do realize that this course was posted by "Traditional University" right? Thanks to Cornell University too.
@@obi3kenobi lol exactly
Great work.. 🖐️❤
Amazing course keep going
How is it ? Did you watched it full ?
amazing course sir 👍
The whole 17 hours with broke throat 😅awesome presentation.
Thank you for this
With utmost sincerity, I didn't grasp anything, this was more words and letters than hands on. But I appreciate the upload
I want to say that I appreciate your Video it is very informative and explanatory.
I have two questions:
What is the Database Management for?
What are SQL Command Types used for
Nothing to say. Just love this org.
3:05:40 Data storage
Thank you😢😢
My computer science teacher told me I wasn’t gonna be a good student, so now I’m here.
Very good
Thank you so much 🙏
How is it ? Did you watched it full ?
thank you so much!
It's cool how his vest colour changes over time
where can i see the solutions to the exercises 🙏
FreeCodeCamp is always saving lives
Excellent !
Eak hi dil hai, kitni baar jeetoge
Thank you!
im gonna do it!
lack of visualization... I literally slept watching this.
Thanks
Thanks again
Thank you
Thank you freeCodeCamp and thanks to The Professor from the Money Heist! :D
How is it ? Did you watched it full ?