Suggestions for MySQL table - 


students ------- name age email cola colb colc  teachers ------- name age email cold cole  parents ------- name age email colf colg colh coli

for above design, should create 1 table additional column called user_type or create 3 tables? there millions of data insert. m worried performance if use 1 table them. need suggestions mysql gurus out here.

please advise. thanks.

if design table, rather in 2 tables.

usertype

- typeid (primary key) - typedescription

user

- userid (primary key) - typeid (foreign key) - cola (nullable) - colb (nullable) - colc (nullable) - cold (nullable) - cole (nullable) - colf (nullable) - colg (nullable) - colh (nullable) - coli (nullable)

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