...…………….. do not exist in the physical database,Composite AttributeDerived AttributesComponent AttributeMulti-value Attribute

The terms you've provided relate to database design and the organization of data within the context of databases, specifically in the context of Entity-Relationship (ER) modeling. Here's a brief explanation of the attributes mentioned:

1. Composite Attribute: This is an attribute that can be divided into smaller sub-parts, which represent more basic attributes with independent meanings. For example, an address can be a composite attribute consisting of street, city, state, and zip code.

2. Derived Attributes: These are attributes that are not stored directly in the database but can be calculated or derived from other attributes. For example, age can be derived from the birth date.

3. Component Attribute: This term is sometimes used interchangeably with composite attributes. It emphasizes the parts that make up a composite attribute.

4. Multi-value Attribute: This is an attribute that can hold multiple values for a single entity. For instance, a person can have multiple phone numbers.

In summary, these attributes are essential in designing a logical structure of data to represent relationships efficiently. Understanding how to classify and utilize these attributes can improve the integrity and accessibility of data in a database system.