Which symbol denote derived attributes in ER Model? (a) Double ellipse (b) Dashed ellipse (c) Squared ellipse (d) Ellipse with attribute name underlined

By Ritesh|Updated : November 3rd, 2022

The dashed ellipse symbol denotes derived attributes in the ER model. A derived attribute is an attribute that can be derived from another characteristic of the entity type, it is symbolized by a dashed eclipse.

ER Model

Double ellipse - Multivalued attribute

Dashed ellipse - Derived attribute

Ellipse with attribute name underlined

Key attribute of ER Model

  • The entity-Relationship model is referred to as an ER model. This data model is on a high level. The data items and relationships for a given system are defined using this model.
  • It creates the database's conceptual design. Additionally, it creates a very straightforward and straightforward data view.
  • The database structure is represented by an entity-relationship diagram in ER modeling.

Summary:

Which symbol denote derived attributes in ER Model? (a) Double ellipse (b) Dashed ellipse (c) Squared ellipse (d) Ellipse with attribute name underlined

In an ER model, derived characteristics are shown by a dashed ellipse symbol. A dashed eclipse is used to represent a derived attribute, which is an attribute that can be derived from other features of the entity type.

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