17.
Find the error in the following SQL statement?
CREATE TABLE person
( person_id SMALLINT, name VARCHAR, LAST VARCHAR, Bith_date DATE
CONSTRAINTS pk_person PRIMARY KEY (person_id));
INSERT INTO person
VALUES( person_id, name, LAST, Birth_date)
(1,’s’,’p’, 24-1991-01);

20.
Suppose you want to select a database named 'sampledb' as the default database. Which of the following commands do you use?