Answer:
There are several types of database models, but three common ones are the hierarchical model, the network model, and the relational model.
1. Hierarchical Model: In this model, data is organized in a tree-like structure with parent-child relationships. Each parent can have multiple children, but each child can only have one parent. It is suitable for representing one-to-many relationships. However, it can be inflexible when dealing with complex data relationships.
2. Network Model: Similar to the hierarchical model, the network model also represents data with parent-child relationships. However, it allows a child to have multiple parents, creating a more flexible structure. It is suitable for representing many-to-many relationships. This model can handle complex data relationships effectively but can be difficult to understand and maintain.
3. Relational Model: The relational model is the most widely used database model. It organizes data into tables, with each table consisting of rows (records) and columns (attributes). Relationships between tables are established using keys. This model provides a simple and intuitive way to represent data and relationships. It allows for powerful data manipulation through SQL queries. The relational model offers flexibility, scalability, and ease of maintenance.
Each of these database models has its strengths and weaknesses, and the choice of model depends on the specific requirements and complexity of the data being stored and managed.
Step-by-step explanation: