code: public String getFullDatabaseKey() {
  
          if (m_fullDatabaseKey == null) {
              m_fullDatabaseKey = getExtProperty("db.name") + "_sql";
          }
          if (CmsStringUtil.isEmpty(m_fullDatabaseKey) || m_fullDatabaseKey.equals("_sql")) {
              m_fullDatabaseKey = getSortedDatabases().get(0) + "_sql";
          }
          return m_fullDatabaseKey;
      }
docs: Returns the fullDatabaseKey.<p>
  
  @return the fullDatabaseKey