foreign key sqlite3 python code example

Example 1: sqlite foreign key

CREATE TABLE track(
  trackid     INTEGER, 
  trackname   TEXT, 
  trackartist INTEGER,
  FOREIGN KEY(trackartist) REFERENCES artist(artistid)
);

Example 2: foreign key sqlite3 python

CREATE TABLE supplier_groups (
	group_id integer PRIMARY KEY,
	group_name text NOT NULL
);

CREATE TABLE suppliers (
    supplier_id   INTEGER PRIMARY KEY,
    supplier_name TEXT    NOT NULL,
    group_id      INTEGER NOT NULL,
    FOREIGN KEY (group_id)
       REFERENCES supplier_groups (group_id) 
);
Code language: SQL (Structured Query Language) (sql)