schemas files

src/schemas/database.py

@@ -0,0 +1,22 @@
+USERS = """CREATE TABLE IF NOT EXISTS users (
+id INTEGER PRIMARY KEY,
+username TEXT NOT NULL,
+usermail TEXT NOT NULL);
+"""  # id == matrikelnr,
+MEDIA = """CREATE TABLE IF NOT EXISTS media (
+id INTEGER PRIMARY KEY AUTOINCREMENT,
+signature TEXT NOT NULL,
+isbn TEXT NOT NULL,
+ppn TEXT NOT NULL,
+title TEXT NOT NULL);
+"""
+
+LOANS = """CREATE TABLE IF NOT EXISTS loans (
+id INTEGER PRIMARY KEY AUTOINCREMENT,
+user_id INTEGER NOT NULL,
+media_id INTEGER NOT NULL,
+loan_date TEXT NOT NULL,
+return_date TEXT NOT NULL,
+FOREIGN KEY (user_id) REFERENCES users(id),
+FOREIGN KEY (media_id) REFERENCES media(id));
+"""