The conversation between human and AI assistant.
What is degree and cardinality in er diagram?
What other kinds of cardinality are there?
There are three other types of cardinality: one-to-one, one-to-many, and many-to-one. One-to-one means that each instance of one entity is associated with only one instance of the other entity, and vice versa. One-to-many means that each instance of one entity can be associated with many instances of the other entity, but each instance of the other entity can only be associated with one instance of the first entity. Many-to-one is the opposite of one-to-many, and many-to-many means that each instance of one entity can be associated with many instances of the other entity, and vice versa.