At present, the most commonly used data models in the database field are

At present, the most commonly used data models in database field are hierarchical model, network model, relational model and object-oriented model. The so-called database refers to an organized collection of data stored in a computer for a long time. The data in the database is organized, described and stored according to a certain data model, which has the independence and expansibility of large and small data and is suitable for all kinds of users. At present, the most commonly used data models in database field are hierarchical model, grid model, relational model and object-oriented model.