what is the relational database model

The relational database model is a type of database management system that organizes data into one or more tables or relations, with each table consisting of rows and columns.

In a relational database, each table represents a specific type of data, and each row in the table represents a unique instance or record of that data. The columns in the table represent different attributes or fields of the data. Each column has a unique name, data type, and constraints on the data that can be stored in it.

The relations between tables are established through primary keys and foreign keys. A primary key is a unique identifier for each row in a table, while a foreign key is a reference to a primary key in another table. These keys enable data to be connected or joined across multiple tables, allowing users to extract and manipulate data from different sources.

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