Displaying and editing multivalued attribute?

1. How do you show multivalued attributes in SQL?
2. How do you represent multivalued attributes in a table?
3. What is a multivalued attribute?
4. How to create multivalued attribute in Oracle?

How do you show multivalued attributes in SQL?

The only way to handle multiple values of the same attribute is to create an entity of which you can store multiple instances, one for each value of the attribute (for example, Figure 4.3). In the case of the Employee entity, we would need a Dependent entity that could be related to the Employee entity.

How do you represent multivalued attributes in a table?

A multivalued attribute is represented using a double oval with the name of the attribute inside the oval.

What is a multivalued attribute?

Multi-valued attributes accept one or more values that are separated with spaces and enclosed in braces. Multi-valued attributes can contain a list of values or a value-map . A list assigns one or more values to the attribute. The syntax is: attribute = value1 value2 value3

How to create multivalued attribute in Oracle?

Oracle supports multivalued attributes with the NESTED TABLE and VARRAY datatypes. However, a pure relational design cannot have multivalued attributes. When normalizing, multivalued attributes must be split into separate entities with 1:N relationships between them.