In constructing ER diagrams, the double ovals are used to denote

Q. In constructing ER diagrams, the double ovals are used to denote

1. multi-value table
2. multi-value entity
3. multi-value attributes
4. multi-value key

Answer: Multi-valued attributes

An Entity Relationship (ER) Diagram is a type of flowchart that illustrates how “entities” such as people, objects or concepts relate to each other within a system.
Any object, for example, entities, attributes of an entity, relationship sets, and attributes of relationship sets, can be represented with the help of an ER diagram.

• Entities are represented by means of rectangles.
• Attributes are the properties of entities. Attributes are represented by means of ellipses.
• Multivalued attributes are depicted by the double ellipse.
• Derived attributes are depicted by dashed ellipse.
• Relationships are represented by the diamond-shaped box.