I have relationship between
INNER JOIN Departments dp
ON sd.Department = dp.Id
INNER JOIN Faculties fd
ON sd.Faculty = fd.Id
First, verify this join:
SELECT * FROM Students sd LEFT JOIN Departments dp ON sd.Department = dp.Id
If cannot see Departments information, verify that sd.Department has the correct values.
Do the same with Faculties
SELECT * FROM Students sd LEFT JOIN Faculties fd ON sd.facultyId = fd.Id
LEFT JOIN you'll see all records of the first table, and only the records of second table that match the ON clause.
And finally check the new relation:
SELECT * FROM Dapartments dp LEFT JOIN Faculties fd ON dp.facultyId = fd.Id