The data model refers to the organizational form of the database, which determines the expression of the connection between the data in the database, that is, the data and structure that represent the objective things and their connections in the computer are called the data model . This article describes in detail the three traditional data models and spatial data models.
1. Data model overview
The data model refers to the organizational form of the database, which determines the expression of the connection between the data in the database, that is, the data and structure that represent the objective things and their connections in the computer are called the data model .
According to different organizational methods, there are four common ones:
1. Traditional data model (hierarchical model, mesh model, relational model)
2. Object-oriented model