Is it bad to use redundant relationships?

Question

Suppose I have the following tables in my database:

Now all my queries depend on Company table. Is it a bad practice to give every other table a (redundant

Answer 1

If you mean add a Company column to every table, it's a bad idea. It'll increase the potential for data integrity issues (i.e. it gets changed in one table but not the other 6 where it should).