What are prime attributes DBMS?

Prime attributes are the attributes of the candidate key which defines the uniqueness (Eg: SSN number in an employee database) A primary key is a column in a table whose values uniquely identify the rows in the table.

What is non prime attribute DBMS?

Attributes of the relation which does not exist in any of the possible candidate keys of the relation, such attributes are called non prime attributes. Non prime attributes also called as Non Key attributes.

What is prime attribute example?

Attributes which are parts of any candidate key of relation are called as prime attribute, others are non-prime attributes. For Example, STUD_NO in STUDENT relation is prime attribute, others are non-prime attribute.

What are prime attributes in a relation?

Prime or Key Attributes: Attributes of the relation which exist in at least one of the possible candidate keys, are called prime or key attributes.

What are attributes in DBMS?

In general, an attribute is a characteristic. In a database management system (DBMS), an attribute refers to a database component, such as a table. It also may refer to a database field. Attributes describe the instances in the column of a database.

When a non prime attribute is determined by a part of primary key it is called :_ *?

D. Candidate key which are not selected for primary key are known as Foreign key. Q.

Can non prime attribute determine prime attribute?

Please note: prime attribute is an attribute that is part of any candidate key. Non prime attribute is an attribute that is not part of any candidate key. If ‘A’ is a non prime attribute, it can determine a prime/non prime attribute.

Which of the following is not a characteristic of a database?

Discussion Forum

What are types of attributes?

Types of Attributes-

• Simple attributes.
• Composite attributes.
• Single valued attributes.
• Multi valued attributes.
• Derived attributes.
• Key attributes.

What are attributes give example?

Attribute is defined as a quality or characteristic of a person, place or thing. Intelligence, charm and a sense of humor are each an example of an attribute.

What are primary attributes?

This unique standard attribute is called a primary-key attribute. The primary-key attribute and a value assigned to a record becomes the primary key of the record. Every record added to the data store must have a primary key.

When all non key attributes are dependent on whole of the key attributes :- the relation is in?

Second Normal Form A relation is in 2NF if, and only if, it is in 1NF and every non-key attribute is fully functionally dependent on the whole key. Thus all non-key attributes must depend on the whole key.

What is the difference between Prime and non-prime attributes in RDBMS?

{classno, rollno}, {examno} are candidate keys and hence classno, rollno and examno are prime attributes, whereas name, city, phoneno are non prime attributes. In RDBMS we generally have a key or set of keys that helps us to uniquely identify the records in a relation/table known as Primary key or Candidate keys (keys other than primary keys).

What is a non prime attribute?

Attributes of the relation which does not exist in any of the possible candidate keys of the relation, such attributes are called non prime attributes. Non prime attributes also called as Non Key attributes.

What are prime attributes in SQL Server?

Prime attributes. Attributes of the database tables which are candidate keys of the database tables are called prime attributes. Example of Prime attributes. As we can see in the figure, Registratin_no and Rollno are the candidate keys, so both of these are primary attributes of the table.

What are primary and non-prime attributes of a database?

As we can see in the figure, Registratin_no and Rollno are the candidate keys, so both of these are primary attributes of the table. Attributes of the database tables which do not exist in any of the possible candidate keys of the database tables are called non-prime attributes.