Lec 21: What is Canonical Cover in DBMS | Minimal cover Irreducible with example

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Ma'am you are the best teacher for me..You have encouraged me to study all these subjects..I have lots of subjects in my current fourth sem....I have dbms,algorithms,java,web(html,css,javascript,php,nodejs,angularjs),Operating systems in just one semester..I know it is headache to study all these subjects in just one semester i.e. 4 months for me..It is driving me crazy...Thanks a lot for your help.I have understood all the concepts because of you in algorithm and OS..Please do all the other subjects as well...You are the best teacher and mentor for me...

[@_IshikaGupta]

Another canonical cover I got for this ques is :{B->C, C->A, C->B, A->C}

[@NikhilKumar-ry7eg]

yep same

[@ranjeet5806]

same . I think she messed up in AC->B . instead of removing this AC->B as C->B exist. She change AC->B to A->B.

[@rohmanatasi1771]

B--->C , C---->A this means , B---->A , according to transitivity. so i GUESS , we can do it like this {B->A,C->B,A->C}. I got the same answer btw :/

[@CYB3r_D3m0n]

@@ranjeet5806 like she said there are many ans depending on which u choose to eliminate , so just follow the rules

[@chandu5904]

@@ranjeet5806 she is correct only

[@rishabhshailesh4146]

Hi ma'am, I am like a new student on this course. Really loving it!! In this video you promised that you'll make a video on multi valued FD and 4NF and 5NF. Please make a video on them too.. I'm really enjoying this video series.. I have learnt alot. I'm about to complete the whole course and now I'm having alot of confidence on DBMS. Before your videos I have tried to learn from geeksforgeeks and a udemy course but I really like your way of teaching. You are giving alot of knowledge to the students like us for free.. I really appreciate the hard work of yours.

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Mam in previous sem exams I got 10 out of 10 points on Data structures and algorithms, thanks mam for your support.

[@devisals]

Well done bro!

[@madhupadayeswanth1865]

Hi ma'am, I am like a new student on this course. Really loving it!! In this video you promised that you'll make a video on multi valued FD and 4NF and 5NF. Please make a video on them too.. I'm really enjoying this video series.. I have learnt alot.

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Mam your video lectures are just at another level...better than any other coaching institution...your level of effort on every video is just awesome mam...and mam finally all i would like to say is that If you stood in front of a mirror holding 11 roses...you will see 12 of the most beautiful things!!!😊😊

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Actually you helped me understand the AVL TREES in the the most simpliest way possible and that's what brought me here 😊

[@manojdeva379]

Wowww finally got the concept of canonical cover😍 Tq mam

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this series is amazing and exactly what I was looking for. thank you soo much!

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Your teaching skills are very nice Mam Now I am BCA 1st year and I have a subject c program It is very interesting subject for me Thank you for helping me to learn c program

[@ranjeet5806]

I got this ques answer :{B->C, C->A, C->B, A->C} I think she messed up in AC->B . instead of removing this AC->B as C->B exist. She changed AC->B to A->B.

[@popeyetech9634]

Yes

[@pruthviraghav2529]

Yes she messed up in 2nd step

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This literally helped me so much thank you! Youre a great teacher

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mam, your lecture series are just amazing u let us learn in one go and no douts are left. Please make lecture series in ER model concept , relational model and concurrency control.. wating for ur uploads...

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Extraordinary lecture Really helpful!!!

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You're brilliant. Answered my query so easily.

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You're a goddess. Your explanation is gold. One of your video is enough to cover my entire lecture haha

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After one month video from jenny lectures...thanku u sooo much...

[@omprakashsharma9767]

Finalyy !! thanks a lot in the inception of the video :) your smile

[@aishwaryakg2411]

Is c->a, b->c, c->b, a->c a canonical form??? Please do tell please....

[@geogaddi84]

The last step with finding the closure of every one is a bit tedious, but at least now I feel like I understand how to do the whole process. Thanks!

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YOU ARE A FANTASTIC TEACHER. WHENEVER I WATCH YOUR VIDEOS. I HAVE TO WATCH IT THREE TIMES BECAUSE YOU ARE VERY BEAUTIFUL AND IT OBVIOUSLY DISTURBS MY CONCENTRATION. LOVE YOU MAM.

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4:00 thank me later

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Thank dyano

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XD

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Looking nice mam

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Excellent teaching.Your students are very lucky

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Thanķs very much for your reply. Don't bother about delay.

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For 1:00 part iPATE is now latest examination in India . And mam for you ( I am having a habit of watching lectures at a playback speed of 1.75x and I did so with yours too , by doing so I was surprised please check it once . And mention me 😊

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Mam please make a series on Algorithms

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Tysm for this example 😊

[@csboi5235]

notes : 14:43 : remove the extraneous attributes from left side and remove the trivial dependencies.

[@vaalarivan_p]

extraneous attributes : 7:00

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Hi miss,pls upload video on Java Programming,I want to learn Java Programming

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very helpful

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Very helpful! Thanks!

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beautiful

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Thanks ma'am🥹

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Hello Jenny. Please can you suggest me the books you have read about the database?

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thanks

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Thanks mam ☺️

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I got c>a, b>c, a>c,c>b By using c>b in step 2

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can you please make a video on ER model and relationship...

[@krupeshjoshi5257]

Closure of AC ={ A,C,B} Also C--> B so we can ignore C in AC, It will not impact on the whole function.

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Madam if you just move from the board after completing the topic then we can take screenshot.

[@rahulsrivastava7017]

lecture starts at 4:11

[@c.danielpremkumar8495]

7:30 this is as good as splitting LHS of an FD (which is not allowed). Since AB-C is not the same as A-C & B-C. Clarification would be appreciated.

[@rohandilip4173]

A-C means a can derive c.(If there is a there will be c for sure). B-C means that b can derive c. (if there is b there will be c for sure) AB-C means that a and b both combined can be used to derive c. The values of both a and b determines the value of c. so we can only say that if both are present,then only c is present and not if one of them. Hope its clear. Anyway sorry for the delay in reply

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[@nitingovil391]

Consider a given relation R=(P,Q,R,S) with following set of FDs: PQ→R PS→Q QS→P PR→Q S→R Find the minimal set of FDs from the above set. Please help

[@simplegupta9142]

Bro I tried its { PQ -> R, QS-> P, PR->Q, S->R}

[@nitingovil391]

@@simplegupta9142 thank you I got the same💖

[@simplegupta9142]

@@nitingovil391 welcome💜

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mam waiting for next video on 4nf and 5nf

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Ma'am can you explain algorithms and how to find the complexity of the programs

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Maam is this a full course on DBMS as I am a CSE student and I need a full course to prepare for my semester exams.

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@4:00

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Make video on Digital image processing yaar

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mam pls make video for 4th and 5th normal form

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at 14:23 you did wrong mam. if A->C then why we discard C from AC->B?

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Ma'am, my answer is F = {C -> A, AB -> C, AC -> B} even if I've followed the rules...

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when will you post maam about database transaction?

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What is data base transaction?

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@@ashokchougule3979 unit 4 in aktu syallubus

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Pls put videos on process synchronization 🙏, I feel difficult to understand

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please, do you have a video for multivalued dependency and 4th normal form?

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Mam please complete the dbms tutorial

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Is this for begineers?