Specialization is denoted by ________ in ER diagram

Options
- Triangle labeled IS A
- Rectangle labeled IS A
- Rectangle Labeled HAS A
- Triangle labeled HAS A

CORRECT ANSWER : Triangle labeled IS A

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Mahesh garad 06-12-2020 11:14 AM

Specialization

Specialization is depicted by a triangle component labelled ISA (E.g. Customer “is a” person). It is a top-down approach in which one higher level entity can be broken down into two lower level entity. In specialization, some higher level entities may not have lower-level entity sets at all.

Prajakta Pandit 03-15-2017 05:54 AM

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