my code doesn't work. can someone help to fix this code?

Question

CREATE TABLE SCHEDULE
(Schedule_ID NUMBER(15) CONSTRAINT Schedule_ID_pk PRIMARY KEY,
Course_Name VARCHAR2(50) NOT NULL,
Semester NUMBER(15) NOT NULL,
Time_by TIME NOT NULL,
Day_by VARCHAR2(10) CHECK (Day_ IN ('Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sunday')),
Group_Class VARCHAR2 (5) NOT NULL);

Answer 1

Provide more data, eg sql engine
Put code in a file appart (codebits)

What is supposed the requirements of this CREATE sql?