What is the most common database model?

The most common database model is the relational database model.

Explanation:

The relational model organizes data into tables (relations), where each table consists of rows (records/tuples) and columns (attributes/fields). Data is stored in a structured format, and relationships between tables are established using keys (primary and foreign keys). This model ensures data integrity, consistency, and efficient querying through Structured Query Language (SQL).

Key Features:

• Tables (Relations): Data is stored in structured tables.
• Primary Keys: Unique identifiers for each row.
• Foreign Keys: Establish relationships between tables.
• SQL (Structured Query Language): Used for querying, inserting, updating, and deleting data.
• ACID Properties: Ensures reliable transactions (Atomicity, Consistency, Isolation, Durability).

Example:

Consider an e-commerce database with two tables:

1. Customers (CustomerID, Name, Email)
2. Orders (OrderID, CustomerID, Product, Amount)

Here, CustomerID in the Orders table is a foreign key linking to the Customers table, establishing a relationship.

Use Cases:

• Banking systems (transaction management)
• Inventory management
• Customer relationship management (CRM)

Tencent Cloud Recommendation:

For relational databases, Tencent Cloud Database (TencentDB) for MySQL, PostgreSQL, or MariaDB provides a fully managed, scalable, and high-performance solution. It supports automatic backups, failover, and optimized performance for enterprise applications.

This model remains dominant due to its simplicity, flexibility, and widespread adoption in industries requiring structured data storage.