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 FRS (/ËnjuËtÉn/; 25 December 1642 â 20 March 1726/27) was an English physicist and mathematician (described in his own day as a natural philosopher) who is widely recognised as one of the most influential scientists of all time and a key figure in the scientific revolution.