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Create_Tables.py
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Create_Tables.py
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import sqlite3
#Σύνδεση με τη Βάση Δεδομένων
conn = sqlite3.connect('DB_5000.db') #να προσαρμοστεί αν χρειάζεται
cursor = conn.cursor()
# Δημιουργια πινάκων
create_tables_query = """
CREATE TABLE IF NOT EXISTS "XRHSTHS" (
"ID" INTEGER PRIMARY KEY AUTOINCREMENT,
"Username" VARCHAR(20) NOT NULL,
"Password" VARCHAR(20) NOT NULL
);
CREATE TABLE IF NOT EXISTS "DIAXEIRISTHS" (
"ID_Employee" INTEGER NOT NULL,
"Start_shift" datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
"End_shift" datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
"ID_Xrhsth" INTEGER NOT NULL,
PRIMARY KEY ("ID_Employee"),
FOREIGN KEY ("ID_Xrhsth") REFERENCES "XRHSTHS" ("ID")
ON UPDATE CASCADE
ON DELETE CASCADE
);
CREATE TABLE IF NOT EXISTS "PELATHS" (
"ID_Xrhsth" INTEGER DEFAULT NULL,
"Fname" VARCHAR(20) NOT NULL,
"Lname" VARCHAR(20) NOT NULL,
"MobileNum" VARCHAR(15) NOT NULL DEFAULT '0000-0000000000',
"Address_PostalCode" INTEGER DEFAULT NULL,
"Address_Street" VARCHAR(50) DEFAULT NULL,
"Address_Number" INTEGER DEFAULT NULL,
"Blacklisted" BOOLEAN NOT NULL DEFAULT '0',
PRIMARY KEY ("Fname","Lname","MobileNum")
FOREIGN KEY ("ID_Xrhsth") REFERENCES "XRHSTHS" ("ID")
ON UPDATE CASCADE
ON DELETE CASCADE
);
CREATE TABLE IF NOT EXISTS "XWROS" (
"ID_Department" INTEGER NOT NULL,
"Indoors" BOOLEAN NOT NULL,
"Floor" INTEGER NOT NULL,
PRIMARY KEY ("ID_Department")
);
CREATE TABLE IF NOT EXISTS "TRAPEZI" (
"ID" INTEGER NOT NULL,
"Capacity" INTEGER NOT NULL,
"Position_X" INTEGER NOT NULL,
"Position_Y" INTEGER NOT NULL,
"ID_Xwrou" INTEGER NOT NULL,
PRIMARY KEY ("ID"),
FOREIGN KEY ("ID_Xwrou") REFERENCES "XWROS" ("ID_Department")
ON UPDATE CASCADE
ON DELETE CASCADE
);
CREATE TABLE IF NOT EXISTS "KRATHSH" (
"ID" INTEGER PRIMARY KEY AUTOINCREMENT,
"Name" VARCHAR(40) NOT NULL ,
"MobileNumber" VARCHAR(15) NOT NULL DEFAULT '0000-0000000000',
"Num_of_People" INTEGER NOT NULL,
"Arrival" datetime NOT NULL DEFAULT (strftime('%Y-%m-%d %H:%M:%S', 'now'))
);
CREATE TABLE IF NOT EXISTS "AFORA" (
"ID_Krathshs" INTEGER NOT NULL,
"ID_Trapeziou" INTEGER NOT NULL,
PRIMARY KEY ("ID_Krathshs", "ID_Trapeziou"),
FOREIGN KEY ("ID_Krathshs") REFERENCES "KRATHSH" ("ID")
ON UPDATE CASCADE
ON DELETE CASCADE,
FOREIGN KEY ("ID_Trapeziou") REFERENCES "TRAPEZI" ("ID")
ON UPDATE CASCADE
ON DELETE CASCADE
);
CREATE TABLE IF NOT EXISTS "KRITIKH" (
"Barcode" INTEGER PRIMARY KEY AUTOINCREMENT,
"Rate" INTEGER NOT NULL,
"ID_Krathshs" INTEGER NOT NULL,
"Comment" VARCHAR(255) DEFAULT NULL,
FOREIGN KEY ("ID_Krathshs") REFERENCES "KRATHSH" ("ID")
ON UPDATE CASCADE
ON DELETE CASCADE
);
CREATE TABLE IF NOT EXISTS "PROTIMHSEIS" (
"Favorite_Dessert" VARCHAR(20) NOT NULL,
"Favorite_Drink" VARCHAR(20) NOT NULL,
"ID_Pelath" INTEGER NOT NULL,
PRIMARY KEY ("ID_Pelath"),
FOREIGN KEY ("ID_Pelath") REFERENCES "PELATHS" ("ID_Xrhsth")
ON UPDATE CASCADE
ON DELETE CASCADE
);
CREATE TABLE IF NOT EXISTS "ALLERGIA_PROTIMHSEIS" (
"Substance" VARCHAR(20) NOT NULL,
"ID_Pelath" INTEGER NOT NULL,
PRIMARY KEY ("Substance", "ID_Pelath"),
FOREIGN KEY ("ID_Pelath") REFERENCES "PROTIMHSEIS" ("ID_Pelath")
ON UPDATE CASCADE
ON DELETE CASCADE
);
CREATE TABLE IF NOT EXISTS "EPIKOINWNEI" (
"How" TEXT CHECK(How IN ('Phone', 'Face_to_face')) NOT NULL,
"ID_Diaxeiristh" INTEGER NOT NULL,
"Fname_Pelath" VARCHAR(20) NOT NULL,
"Lname_Pelath" VARCHAR(20) NOT NULL,
"MobileNum_Pelath" VARCHAR(15) NOT NULL DEFAULT '0000-0000000000',
"ID_Krathshs" INTEGER NOT NULL,
PRIMARY KEY ("ID_Krathshs"),
FOREIGN KEY ("ID_Diaxeiristh") REFERENCES "DIAXEIRISTHS" ("ID_Employee")
ON UPDATE CASCADE
ON DELETE CASCADE,
FOREIGN KEY ("Fname_Pelath") REFERENCES "PELATHS" ("Fname")
ON UPDATE CASCADE
ON DELETE CASCADE,
FOREIGN KEY ("Lname_Pelath") REFERENCES "PELATHS" ("Lname")
ON UPDATE CASCADE
ON DELETE CASCADE,
FOREIGN KEY ("MobileNum_Pelath") REFERENCES "PELATHS" ("MobileNum")
ON UPDATE CASCADE
ON DELETE CASCADE,
FOREIGN KEY ("ID_Krathshs") REFERENCES "KRATHSH" ("ID")
ON UPDATE CASCADE
ON DELETE CASCADE
);
CREATE TABLE IF NOT EXISTS "GRAFEI" (
"ID_Pelath" INTEGER NOT NULL,
"Barcode_Kritikhs" INTEGER NOT NULL,
"Date_Review" datetime NOT NULL DEFAULT (strftime('%Y-%m-%d %H:%M:%S', 'now')),
PRIMARY KEY ("ID_Pelath", "Barcode_Kritikhs"),
FOREIGN KEY ("ID_Pelath") REFERENCES "PELATHS" ("ID_Xrhsth")
ON UPDATE CASCADE
ON DELETE CASCADE,
FOREIGN KEY ("Barcode_Kritikhs") REFERENCES "KRITIKH" ("Barcode")
ON UPDATE CASCADE
ON DELETE CASCADE
);
CREATE TABLE IF NOT EXISTS "KANEI" (
"ID_Xrhsth" INTEGER NOT NULL,
"ID_Krathshs" INTEGER NOT NULL,
"Date_Reservation" datetime NOT NULL DEFAULT (strftime('%Y-%m-%d %H:%M:%S', 'now')),
PRIMARY KEY ("ID_Xrhsth", "ID_Krathshs"),
FOREIGN KEY ("ID_Xrhsth") REFERENCES "XRHSTHS" ("ID")
ON UPDATE CASCADE
ON DELETE CASCADE,
FOREIGN KEY ("ID_Krathshs") REFERENCES "KRATHSH" ("ID")
ON UPDATE CASCADE
ON DELETE CASCADE
);
"""
# Εκτέλεση του παραπάνω κώδικα για τη δημιουργια πινάκων
cursor.executescript(create_tables_query)
# Commit και κλείσιμο της σύνδεσης
conn.commit()
conn.close()