Here are some examples of Oracle alter table syntax to modify data columns and note that you can add constraints like NOT NULL: ALTER TABLE customer MODIFY (cust_name varchar2(100) not null, cust_hair_color varchar2(20)) ;
Did Sir Isaac Newton write any books? His best known book is Principia (Philosophiae Naturalis Principia Mathematica) published in 1687; which includes his laws of motion. Edit
Sir Isaac Newton (1642 â 1727) wrote the quote above in his letter to rival Robert Hooke in 1676. Nothing is done in a vacuum, we must all stand on our forefathers to better ourselves and the world around us. Tackling the challenges of the world today will require that more than ever.