Oracle provides alter table syntax to modify data columns in-place in this form: alter table table_name modify column_name datatype; If you are brave you can use a single alter table syntax to modify multiple columns:
Julius Robert Oppenheimer (22 April 1904 â 18 February 1967) was an American physicist and the scientific director of the Manhattan Project.
Robert Smithson. Robert Smithson (January 2, 1938 â July 20, 1973) was an American artist who used photography in relation to sculpture and land art.