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
John Newton was an Anglican clergyman and former slave ship master. It took him a long time to speak out against the Slave Trade but he had an influence on many young evangelical Christians, particularly William Wilberforce.At just 11 years old, Newton went to sea with his father.ilberforce took his advice, and spent the rest of his life working towards the abolition of slavery. In 1787, Newton wrote a tract supporting the campaign, 'Thoughts upon the African Slave Trade', which was very influential.