CREATE TABLE CLASS (
CLASS_CODE varchar(5) PRIMARY KEY,
CRS_CODE varchar(10),
CLASS_SECTION varchar(2),
CLASS_TIME varchar(20),
CLASS_ROOM varchar(8),
PROF_NUM int,
FOREIGN KEY (CRS_CODE) REFERENCES COURSE(CRS_CODE)
FOREIGN KEY (PROF_NUM) REFERENCES EMPLOYEE(EMP_NUM)
)

CREATE TABLE COURSE (
CRS_CODE varchar(10) PRIMARY KEY,
DEPT_CODE varchar(10),
CRS_DESCRIPTION varchar(35),
CRS_CREDIT float(8),
FOREIGN KEY (DEPT_CODE) REFERENCES DEPARTMENT(DEPT_CODE)
)

CREATE TABLE DEPARTMENT (
DEPT_CODE varchar(10) PRIMARY KEY,
DEPT_NAME varchar(30),
SCHOOL_CODE varchar(8),
EMP_NUM int,
DEPT_ADDRESS varchar(20),
DEPT_EXTENSION varchar(4),
FOREIGN KEY (EMP_NUM) REFERENCES EMPLOYEE(EMP_NUM)
)

CREATE TABLE EMPLOYEE (
EMP_NUM int PRIMARY KEY,
EMP_LNAME varchar(15),
EMP_FNAME varchar(12),
EMP_INITIAL varchar(1),
EMP_JOBCODE varchar(5),
EMP_HIREDATE datetime,
EMP_DOB datetime
)

CREATE TABLE ENROLL (
CLASS_CODE varchar(5),
STU_NUM int,
ENROLL_GRADE varchar(50),
FOREIGN KEY (CLASS_CODE) REFERENCES CLASS(CLASS_CODE)
FOREIGN KEY (STU_NUM) REFERENCES STUDENT(STU_NUM)
)

CREATE TABLE PROFESSOR (
EMP_NUM int,
DEPT_CODE varchar(10),
PROF_OFFICE varchar(50),
PROF_EXTENSION varchar(4),
PROF_HIGH_DEGREE varchar(5),
FOREIGN KEY (EMP_NUM) REFERENCES EMPLOYEE(EMP_NUM),
FOREIGN KEY (DEPT_CODE) REFERENCES DEPARTMENT(DEPT_CODE)
)

CREATE TABLE STUDENT (
STU_NUM int PRIMARY KEY,
STU_LNAME varchar(15),
STU_FNAME varchar(15),
STU_INIT varchar(1),
STU_DOB datetime,
STU_HRS int,
STU_CLASS varchar(2),
STU_GPA float(8),
STU_TRANSFER numeric,
DEPT_CODE varchar(18),
STU_PHONE varchar(4),
PROF_NUM int,
FOREIGN KEY (DEPT_CODE) REFERENCES DEPARTMENT(DEPT_CODE)
)
SELECT T1.stu_fname ,  T1.stu_lname ,  T4.crs_description FROM student AS T1 JOIN enroll AS T2 ON T1.stu_num  =  T2.stu_num JOIN CLASS AS T3 ON T2.class_code  =  T3.class_code JOIN course AS T4 ON T3.crs_code  =  T4.crs_code
What are the names of all students who took a class and the corresponding course descriptions?