Entity Relationship | MCQs

Explanation

The Entity Relationship (ER) Model visually represents entities, their attributes, and relationships in a database.

It is widely used in database design to define the logical structure before actual implementation.

Explanation

The hierarchical model organizes data in a tree-like structure, similar to an organizational chart, where each record has a single parent and can have multiple children.

It represents relationships between data in a parent-child hierarchy.

Explanation

In an Entity-Relationship (E-R) diagram, a rectangle represents an Entity.

Attributes are shown as ellipses.

Relationships are shown as diamonds.