Update add-foreign-key-postgresql.sql

Author: thescholars14

sql-queries-6/add-foreign-key-existing-table/add-foreign-key-postgresql.sql

@@ -1,13 +1,13 @@
 --adding a new column
-ALTER TABLE student
+ALTER TABLE Student
 ADD COLUMN department_id INT;
 
 --adding a foreign key constraint to an existing table
-ALTER TABLE student
+ALTER TABLE Student
 ADD CONSTRAINT fk_student_department
-FOREIGN KEY (department_id) REFERENCES department(id);
+FOREIGN KEY (department_id) REFERENCES Department(id);
 
 --adding a foreign key constraint on multiple columns
-ALTER TABLE course 
+ALTER TABLE Course 
 ADD CONSTRAINT fk_course_department 
-FOREIGN KEY (department_id, name) REFERENCES department (id, name);
+FOREIGN KEY (department_id, name) REFERENCES Department (id, name);