title: How to modify existing entity generated with jhipster?
body: <p>I use jhipster generator to create a projet. I've generated some entity manually following the information provided in <a href="http://jhipster.github.io/development.html" rel="noreferrer">jhipster documentation</a> : </p>
  
  <blockquote>
    <p><em>If you prefer (or need) to do a database update manually, here is the development workflow: Modify your JPA entity (add a field, a
    relationship, etc.) Create a new "change log" in your
    src/main/resources/config/liquibase/changelog directory. The files in
    that directory are prefixed by their creation date (in yyyyMMddHHmmss
    format), and then have a title describing what they do. For example,
    20141006152300_added_price_to_product.xml is a good name. Add this
    "change log" file in your
    src/main/resources/config/liquibase/master.xml file, so it is applied
    the next time you run your application If you want more information on
    using Liquibase, please go to <a href="http://www.liquibase.org" rel="noreferrer">http://www.liquibase.org</a>.</em></p>
  </blockquote>
  
  <p>Here the documentation just mention, how to add!!!
  What to do if i want to delete a field or a relation between entities (jpa entity) ? </p>
  
  <p>Thanks</p>