title: Display all CONSTRAINT of table in SQL
body: <p>I would like to have some suggestions on how to display all the CONSTRAINTs of a created table in SQL.</p>
  
  <p>I created a table:</p>
  
  <pre><code>CREATE TABLE ACCOUNT(
      USERNAME      VARCHAR(15)     UNIQUE,
      PASSWORD      VARCHAR(15),
      CONSTRAINT    ACCOUNT_UNIQUE  UNIQUE(USERNAME),
      CONSTRAINT    ACCOUNT_PK      PRIMARY KEY(USERNAME,PASSWORD)
  </code></pre>
  
  <p>I would like to discover these constraints because when I do / or RUN command in the SQL command line, I can't display those constraints anymore.</p>
  
  <p>Is there a way to display all the CONSTRAINTs for the table ACCOUNT?</p>