What are the advantages and disadvantages of a hierarchical data model and network data model?

Hierarchical data model :

Advantages

- simplicity

- data security

- data integrity

- efficiency

- ease to add and delete record

Disadvantages

- implement complexity

- database management problem

- lack of structural independence

- programming complexity

- implementation limitation

- procedural access language

Network data model :

Advantages

- easy to access data

- can handle more relationship types

- data independence

- data integrity

- data independence

Disadvantages

- system complexity

- lack of structural independence

- procedural access language