Final answer:
A field is not an instance of an entity; rather, it represents an attribute or a piece of information within an entity. A field is wrongly described, and understanding the correct definitions of entities, attributes, fields, and relationships is critical for accurate database design.
Step-by-step explanation:
The statement that is NOT true regarding database design is: A field is an instance of an entity. This is incorrect since a field actually represents an attribute or a piece of information within an entity, not the instance of the entity itself. To clarify:
- An entity is a person, place, item, or event that you want to keep data about.
- An attribute is information about the entity, which is more accurately what a field represents.
- A relationship is an association between tables that is typically based on common fields linking the two entities.
Understanding these concepts is foundational in database design and helps in ensuring that the structure can accurately and efficiently represent the required information.