Understanding Entity Instance in Databases

What is the definition of Entity Instance in database?

In the context of databases, an entity instance refers to a specific occurrence or example of an entity within a database. An entity is a distinct object or concept that can be identified and has attributes that describe it. For example, in a database for a school, "Student" could be an entity, and each individual student (e.g., John Doe, Jane Smith) would be an entity instance.

To summarize:

• Entity: A category or type of object (e.g., Student, Course, Employee).
• Entity Instance: A specific, individual occurrence of that entity (e.g., a particular student named John Doe).

In relational databases, entity instances are typically represented as rows in a table, where each row corresponds to a unique instance of the entity, and the columns represent the attributes of that entity.