Candidate, Primary, Alternate, Super and Composite key types in DBMS (SQL)

Aiza Khan

2023-04-11 12:24:12

Here is a good and short description of Primary and Foreign Keys

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R Singh Rajput

2022-07-26 15:16:58

Very nicely explained . thank u sir

Chinthana Sachin

2021-01-08 06:33:42

Thanx a lot!

BIKU SINGH

2020-05-16 10:07:51

Great explanation!!!!

Kevin C

2020-02-28 01:29:13

Nobody refers to it as "Date of Joining". It's almost always "Hire Date".

arul vishwakarma

2020-01-09 09:01:03

Thanks Buddy!!!... clear description!

ANKITA Thakur

2020-01-07 16:20:12

Thanku Sir Ji

Code Programming

2019-12-31 09:27:02

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Hamza Sami

2019-09-24 15:31:35

Thank you soooooo muchhhhhh

Family is Love

2019-08-12 07:53:17

You're better than my Professor

Chandana 1997

2019-04-04 14:21:43

Thanks alot

Pranjal Salunke

2019-03-14 16:38:59

finally keys got cleared....thanks.

satya shiv Modi

2019-03-10 06:56:21

Awesome video.

Arkan M Gerges Anabi

2018-11-25 09:49:51

Hi thanks a lot for this video. I want to mention that there is a typo on the composite key, it should be "if a table don't have..."

Jas and Sar

2018-10-28 04:51:42

Nice explanations

labib8aug

2018-05-29 16:28:49

Whats the difference between super key and composite key then ?

DANTECH MEDIA

2018-04-23 04:27:40

......yes....you are great person.....unlike some tutors whose tutorials are in pure
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RNY4 Health

2018-03-09 05:56:17

Thank you for this video. A more common composite key scenario is where one has dated material, for example in a payroll system, you could have multiple rows for the same employee (paid a salary over many months) but by adding payroll date to the employee ID you would have a unique composite key. Another natural scenario would be an order detail table, where you might combine an order ID plus an item ID to create a unique composite key for an order which includes many items.

Syed Haq

2018-01-06 04:52:59

Finally found the to the best explanation about keys concept. Thanks