Can we change table structure in Mirroring

Can we change table structure in Mirroring. Like adding or deleting columns and tables and how can we do it. Thank you very much.

Yes you can, and you do it just like you would if Mirroring was not being used (i.e. ALTER TABLE, CREATE TABLE, etc.)...DB mirroring moves logged transactions to the mirror as they are applied to the principle, and this includes DDL statements.

HTH,