* Receives the value of the ODFDOM attribute representation <code>DbDeleteRuleAttribute</code> , See {@odf.attribute db:delete-rule}
*
* @return - the <code>String</code> , the value or <code>null</code>, if the attribute is not set and no default value defined.
*/
public String getDbDeleteRuleAttribute() {
DbDeleteRuleAttribute attr = (DbDeleteRuleAttribute) getOdfAttribute(OdfDocumentNamespace.DB, "delete-rule");
if (attr != null) {
return String.valueOf(attr.getValue());
}
return DbDeleteRuleAttribute.DEFAULT_VALUE;
}