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
What is true is that there is a book of the Bible named Jacob in the original Greek, written by the Lord's brother, Jacob. Not James. Hmmm, I seem to remember that Peter and, in fact, all the apostles had a real name and that Jesus named them all.