Database - Data Modeling with ER Model - Discussion
Discussion Forum : Data Modeling with ER Model - General Questions (Q.No. 18)
18.
Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator?
Discussion:
6 comments Page 1 of 1.
Dhwani said:
1 decade ago
Isn't that call a weak entity????????
Shashi said:
1 decade ago
What is this discriminator?
Rutuja said:
1 decade ago
Weak entity means which doesn't have proper primary key this is called as weak entity.
What is this discriminator?
What is this discriminator?
Pooja said:
1 decade ago
What is this discriminator?
Rathod said:
1 decade ago
Discriminator means, if weak entity want to create primary key then its needed some column, which column is nothing but primary key column of strong entity.
In short discriminator = (foreign key + primary key of strong entity).
In short discriminator = (foreign key + primary key of strong entity).
(1)
Aditi singhania said:
8 years ago
Thanks @Rathod.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers