Recursive relationships in ER Model | DBMS

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Jahnavi Jha

Jahnavi Jha

Күн бұрын

Пікірлер: 14
@shikharjain8930
@shikharjain8930 3 жыл бұрын
To the point and nice explanation. 👍 By the way beautiful handwriting too.
@zobatusgaming8292
@zobatusgaming8292 3 жыл бұрын
This video came on youtube homepage. Very nice madam. Keep going.
@sumanthm41
@sumanthm41 Жыл бұрын
this made me more confused now
@tesnimseid4567
@tesnimseid4567 2 жыл бұрын
Tnxxx love
@fernandoborges3044
@fernandoborges3044 2 жыл бұрын
Thanks, if weren't you I wouldn't have noticed that in the notation (min, max) it's necessary to invert the sides. 9:55
@michellemaina4806
@michellemaina4806 3 жыл бұрын
great teaching.
@noideadear3817
@noideadear3817 2 жыл бұрын
Q1. Is it possible to have 1:1 self recursive relation in an entity set? for example a game is played between two teams (referred to as host_team and guest_team). Here game is a relation set which associated with team entity set recursively. Q2. If fist question answer is a "yes" then how it is mapped into relational schema?
@jahnavijha4900
@jahnavijha4900 2 жыл бұрын
Yes, it is possible to have a recursive relationship of 1:1 cardinality. E.g. Marriage relationship, one employee from employee entity set is married to another employee of the same entity set. So, it is definitely possible. Does your first question end there? I didn't understand your example with reference to recursive relationships. For relational schema, create a relation with name employee(example I have taken) and include all attributes associated to employee entity set and if the relationship has any attribute include that in the same relation.
@history_rizz
@history_rizz 3 жыл бұрын
It really help thanks a lot maam
@Sandu-oj5bl
@Sandu-oj5bl 3 жыл бұрын
Concise communication.
@Sandu-oj5bl
@Sandu-oj5bl 3 жыл бұрын
Please keep uploading videos. Kindly let me know f i can ask related concepts
@jahnavijha4900
@jahnavijha4900 3 жыл бұрын
Yes, go ahead
@rishiroushan7163
@rishiroushan7163 3 жыл бұрын
Sorry but board thoda bada hota toh sahi rehta 👍
@jahnavijha4900
@jahnavijha4900 3 жыл бұрын
It is, in the upcoming videos.
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