COMPUTER FUNDAMENTALS

Detailed explanation-1: -In simple words, an entity that has a physical existence in the real world is called a tangible entity. For example, in a database, a table represents a tangible entity because it contains a physical object that we can see and touch in the real world.

Detailed explanation-2: -An entity may be concrete (a person or a book, for example) or abstract (like a holiday or a concept). An entity set is a set of entities of the same type (e.g., all persons having an account at a bank). Entity sets need not be disjoint.

Detailed explanation-3: -Examples of an entity are a single person, single product, or single organization. Entity type. A person, organization, object type, or concept about which information is stored.