Difference Between the Network Model and the Hierarchical Model
Feature | Hierarchical Model | Network Model |
---|---|---|
Structure | Tree-like structure | Graph structure |
Relationships | One-to-many (single parent, multiple children) | Many-to-many (multiple parents and children) |
Flexibility | Less flexible | More flexible |
Data Access | Single access path | Multiple access paths |
Redundancy | Higher redundancy due to rigid hierarchy | Lower redundancy due to shared relationships |
Complexity | Simpler to design and implement | More complex to design and manage |
Usage Scenario | Suitable for simple, hierarchical data structures | Suitable for complex, interconnected data structures |
Efficiency | Efficient for hierarchical traversal | Efficient for complex queries and data retrieval |
Example | Organizational chart | Telecommunications network |
Network Model in DBMS
The Network Model in a Database Management System (DBMS) is a data model that allows the representation of many-to-many relationships in a more flexible and complex structure compared to the Hierarchical Model. It uses a graph structure consisting of nodes (entities) and edges (relationships) to organize data, enabling more efficient and direct access paths.