Related Questions

An attribute A of datatype varchar(20) has the value “Avi”. The attribute B of datatype char(20) has value ”Reed”. Here attribute A has ____ spaces and attribute B has ____ spaces.
Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?
In a given relationship R, if an attribute A uniquely defines all other attributes, then the attribute A is a key attribute which is also known as the _________ key.
A subtype discriminator of the supertype is an attribute whose values determine the target subtype(s).
An entity in A is associated with at most one entity in B, and an entity in B is associated with at most one entity in A.This is called as
How is the discriminator of a weak entity set specified?
The attribute name could be structured as an attribute consisting of first name, middle initial, and last name. This type of attribute is called
In a 1:N relationship, the parent is the entity on the one side of the relationship and the child is the entity on the N side of the relationship.
A subtype entity is a special case of another entity called a supertype entity.
All attribute declarations begin with the keyword ____________ followed by the element name, attribute name, attribute type, and default data information.