DROP TABLE Adress; DROP TABLE Room; DROP TABLE Person; DROP TABLE Clerk; DROP TABLE Client; DROP TABLE Booking; CREATE TABLE Adress ( adressId NUMBER PRIMARY KEY, street VARCHAR2(50) NOT NULL, houseNumber NUMBER NOT NULL, postalCode NUMBER NOT NULL, city VARCHAR2(50) NOT NULL, country VARCHAR2(50) NOT NULL ); CREATE TABLE Room ( roomNumber NUMBER PRIMARY KEY, floor NUMBER NOT NULL, roomTyp VARCHAR2(50) NOT NULL, size NUMBER NOT NULL, accessibility NUMBER NOT NULL, beds NUMBER NOT NULL ); CREATE TABLE Person ( personId NUMBER PRIMARY KEY, name VARCHAR2(50) NOT NULL, lastName VARCHAR2(50) NOT NULL, age NUMBER NOT NULL, adressId NUMBER NOT NULL, CONSTRAINT fkadress FOREIGN KEY (adressId) REFERENCES Adress(adressId) ); CREATE TABLE Clerk ( personId NUMBER PRIMARY KEY, staff NUMBER NOT NULL UNIQUE, salary NUMBER NOT NULL, CONSTRAINT inheritace FOREIGN KEY (personId) REFERENCES Person(personId) ); CREATE TABLE Client ( personId NUMBER PRIMARY KEY, bankDetails VARCHAR2(22) NOT NULL, CONSTRAINT inheritace FOREIGN KEY (personId) REFERENCES Person(personId) ); CREATE TABLE Booking ( bookindId NUMBER PRIMARY KEY, arrivalDate DATE NOT NULL, departueDate DATE NULL, cost NUMBER NULL, pensionType VARCHAR2(20) NOT NULL. lateCheckout NUMBER NULL, clientId NUMBER NOT NULL, FOREIGN KEY (clientId) REFERENCES Person(personId) ); CREATE TABLE BookingGuest ( bookingId NUMBER NOT NULL, personId NUMBER NOT NULL, PRIMARY KEY(bookingId, personId) FOREIGN KEY (bookingId) REFERENCES Booking(bookindId), FOREIGN KEY (personId) REFERENCES Person(personId) );