Answer :
In a relational model, data and relationships are defined using a collection of Table organized into categories of data known as fields.
How are database tables connected to one another in a relational database?
The primary key is a row-unique identifier that is shared by all tables in a relational database. Each row can be used to establish a link between different tables using a foreign key, which is a reference to a main key of another existing table.
What fundamental ideas underlie a relational database model?
All data is stored in tables, which are composed of rows and columns, in a relational database. A unique datatype—such as an integer number, a string of characters (for text), or a date—is allocated to each column in a table, which may have one or more columns. The table's rows each contain a value for a certain column.
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