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What are the advantages and disadvantages of a hierarchical data model and network data model?
Wiki User
∙ 13y ago
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
Wiki User
∙ 13y ago
Wiki User
∙ 9y agoIn database there are number of models two of them are hierarchical and network data models.In hierarchical data model the data is represented in the form of a tree like binary tree, it is simple though but the implementation is complex. In network model the data are related to each other via links, here the data is easy to access and also integrity is maintained but it lacks structural independence.
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Some disadvantages of the hierarchical database model include complexity in representing certain types of relationships, limited flexibility in querying data due to its rigid structure, and potential data redundancy issues as each child can only have one parent record.
How is data organized in hierarchical data model?
The hierarchical model is a restricted type of network model. Again, data is represented as collections of records and relationships are represented by sets. However, the hierarchical model allows a node to have only one parent. A hierarchical model can be represented as a tree graph, with records appearing as nodes (also called segments) and sets as edges.
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