What is primary key and foreign key in SQLite?

Question

The group_id column in the supplier_groups table is called the parent key, which is a column or a set of columns in the parent table that the foreign key constraint references. Typically, the parent key is the primary key of the parent table. The group_id column in the suppliers table is called the child key.

What is a foreign key in SQLite?

A foreign key is a way to enforce referential integrity within your SQLite database. A foreign key means that values in one table must also appear in another table. The referenced table is called the parent table while the table with the foreign key is called the child table.

What is primary key in SQLite?

Advertisements. A primary key is a field in a table which uniquely identifies the each rows/records in a database table. Primary keys must contain unique values. A primary key column cannot have NULL values.

What is primary key and foreign key?

A primary key is used to assure the value in the particular column is unique. The foreign key provides the link between the two tables.

What is foreign and primary key in SQL?

A FOREIGN KEY is a field (or collection of fields) in one table, that refers to the PRIMARY KEY in another table. The table with the foreign key is called the child table, and the table with the primary key is called the referenced or parent table.

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