title: Sql table adding constraint to check for number limit
body: <p>I am creating a table in oracle DB and trying to add constraint so that the numbers allowed in the column are 1,2,3.</p>
  
  <pre><code>CREATE TABLE "TABLE_EXAMPLE"
  (
  .
  .
  "PROTOCOL" NUMBER (1,2,3),
  
  ....)
  
  CONSTRAINT "CH1"
          CHECK ("PROTOCOL" BETWEEN 1 AND 3),
  </code></pre>
  
  <p>Am I doing right or any better way?</p>