- Database models show the logical structure of a database and the relationships and constraints that determine how data can be accessed and stored.
- the way the information is stored and retrieved from a database.
- Defines the rules by which the database will operate.
- integrated collection of concepts describing and manipulating data, as well as constraints on the data within an organization.
- It is a conceptual representation of physical data stored in the database.
- Data models define how data is connected to each other and how it’s processed and stored inside the system.
- gives an idea of how the final system would look after implementation.
- It specifies the data items as well as the relationships between them.
- In a database management system, data models are often used to show how data is connected, stored, accessed, and changed.
- Some of the Data Models in DBMS are:
- Hierarchical Model
- Network Model
- Entity-Relationship Model
- Relational Model