title: which data type i must choose for boolean type field?
body: <p>I wanna create a Boolean field in my oracle table but I seen there is no boolean or byte data type so,which one of the oracle data type I must choose for a boolean value?</p>
  
  <p>answer:
  I find how Oracle developer do this by wisard:</p>
  
  <pre><code>CREATE TABLE TABLE17
  (
    COLUMN1 CHAR(1 BYTE) NOT NULL,
    COLUMN2 VARCHAR2(4000)
  )
  ;
  </code></pre>