Zadanie1
CREATE TABLE EMP5
    ( employee_id NUMBER(6) PRIMARY KEY
    ,last_name VARCHAR2(25) NOT NULL
    ,salary NUMBER(8,2) CHECK (salary > 0)
    );

CREATE TABLE JOB5
    ( job_id VARCHAR2(10) PRIMARY KEY
    ,job_title VARCHAR2(35)
    );

CREATE UNIQUE INDEX index1
    ON JOB5 (EMPLOYEE_ID);

CREATE UNIQUE INDEX index2
    ON JOB5 (JOB_ID);

ZADANIE2