Question

Which of the following is true of network structure?

• A. It is a physical representation of the data
• B. It allows a many-to-many relationship
• C. It is conceptually simple
• D. It will be dominant database of the future

Answer 1

The correct option is B It allows a many-to-many relationship

Many-to-many relationship is true in network structure.

Many-to-many relationshipis a type of cardinality that refers to the relationship between two entities A and B in which A may contain a parent instance for which there are many children in B.

The network model is a database model conceived as a flexible way of representing objects and their relationships. Its distinguishing feature is that the schema, viewed as a graph in which object types are nodes and relationship types are arcs, is not restricted to being a hierarchy or lattice.