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
The book that is now generally known as the Almagest (from a hybrid of Arabic and Greek, âthe greatestâ) was called by Ptolemy HÄ mathÄmatikÄ syntaxis (âThe Mathematical Collectionâ) because he believed that its subject, the motions of the heavenly bodies, could be explained in mathematical terms.