What data model do most database management systems currently use?
The data model used by most database management systems is the "relational model". The structural model in the data model models data from the perspective of a computer system, including hierarchical models, network models, relational models and object-oriented models; among which the relational model is the most commonly used data model in DBMS.
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The structural model in the data model is to model data from the perspective of the computer system, including hierarchical models, network models, and relationships. Model and object-oriented model; among them, the relational model is the most commonly used data model in DBMS.
Hierarchical model:
Organize data into a one-to-many relationship structure, using a tree structure to represent entities and the relationships between entities.
Network model:
Use connection instructions or pointers to determine the network connection relationship between data, which is a many-to-many type of data organization.
Relationship model:
Organize data in the form of record groups or data tables to facilitate storage and transformation using the relationships between various entities and attributes. Hierarchy also has no pointers and is a very effective data organization method for establishing the relationship between spatial data and attribute data.
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