It is an attribute that does not occur in some candidate key.
Prime attribute are part of any candidate key. Non-prime attribute are not part of any candidate key.
In database a key is a field that we use to sort a data.whereas superkey is a subset of attribute so that no tuple have the same combination of values.
A composite attribute has multiple components, each of which is atomic or composite.
A Complex attribute that is both Composite and Multi valued. Composite and Multivalued attributes can be nested arbitrarily to form a Complex attribute like Address.
A character attribute refers to a quality that a person possesses, such as funny personality or a kind heart.
The prime attribute in database design is a key attribute that uniquely identifies each record in a table. It is crucial for maintaining data integrity and ensuring efficient data retrieval and manipulation. The prime attribute serves as the primary key in a database table, allowing for the establishment of relationships between different tables and enabling the implementation of data constraints and indexing for faster query processing. Overall, the prime attribute plays a vital role in shaping the structure and functionality of a database system by facilitating data organization, retrieval, and maintenance.
Prime attribute are part of any candidate key. Non-prime attribute are not part of any candidate key.
record
In a database management system (DBMS), an attribute may describe a component of the database, such as a table or a field, or may be used itself as another term for a field. Commonly we can say that an attribute is a "propety" of a database field or its a characteristic or facet of the data field..
database simple attritbute
A composite attribute in a database is an attribute that can be divided into smaller sub-parts, each representing a distinct property. Instead of storing it as a single value, a composite attribute is broken down into its components to improve data organization and accuracy. This approach helps in reducing redundancy and ensures data integrity within the database.
In database technology, domain refers to the description of an attribute's allowed values. The physical description is a set of values the attribute can have, and the semantic, or logical, description is the meaning of the attribute.
attribute
A user of a relational database refers to a field as a column in a table. This column represents a specific attribute or data type within the database table. By interacting with fields, users can query, update, and retrieve specific information stored in the database.
a key is important in a database because using of that key only we can identify a unique attribute.
A relation violates third normal form (3NF) if it has a transitive dependency where a non-prime attribute depends on another non-prime attribute (which itself is not a candidate key). This means that a non-prime attribute is functionally dependent on another non-prime attribute rather than on a candidate key.
Entity is real world thing,person,place,event or object about which store data in database. Attribute are the characteristics of entity is called attribute.