{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[25:30] hl[25:27,30] *}

### Criar Tabelas de Banco de Dados na Inicialização

Vamos criar as tabelas do banco de dados quando o aplicativo for iniciado.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[32:37] hl[35:37] *}

Aqui, criamos as tabelas em um evento de inicialização do aplicativo.

 *
 * <p>See the Guava User Guide article on <a href=
 * "https://github.com/google/guava/wiki/CollectionUtilitiesExplained#tables">{@code Tables}</a>.
 *
 * @author Jared Levy
 * @author Louis Wasserman
 * @since 7.0
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
public final class Tables {
  private Tables() {}

  /**
   * Returns a {@link Collector} that accumulates elements into a {@code Table} created using the

   *
   * <p>For empty or single-cell immutable tables, {@link #of()} and {@link #of(Object, Object,
   * Object)} are even more convenient.
   *
   * <p>Builder instances can be reused - it is safe to call {@link #buildOrThrow} multiple times to
   * build multiple tables in series. Each table is a superset of the tables created before it.
   *
   * @since 11.0
   */
  @DoNotMock

        if: contains(github.event.pull_request.labels.*.name, 'build and push to gcr.io for staging')
        uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567 # v3.3.0
        with:
          registry: gcr.io
          username: _json_key
          password: ${{ secrets.GCP_CREDS }}
      -
        name: Login to AR
        # Once this is verified, change the label's name. For now, we will piggyback on gcr.io actions.

							<la:message key="labels.search_result_sort_filename_asc" />
						</la:option>
						<la:option value="filename.desc">
							<la:message key="labels.search_result_sort_filename_desc" />
						</la:option>
						<la:option value="created.asc">
							<la:message key="labels.search_result_sort_created_asc" />
						</la:option>
						<la:option value="created.desc">
							<la:message key="labels.search_result_sort_created_desc" />

=content_length:[100000 TO 499999]\tlabels.facet_contentLength_500kto1m=content_length:[500000 TO 999999]\tlabels.facet_contentLength_1m=content_length:[1000000 TO *]\nlabels.facet_filetype_title:labels.facet_filetype_html=filetype:html\tlabels.facet_filetype_word=filetype:word\tlabels.facet_filetype_excel=filetype:excel\tlabels.facet_filetype_powerpoint=filetype:powerpoint\tlabels.facet_filetype_odt=filetype:odt\tlabels.facet_filetype_ods=filetype:ods\tlabels.facet_filetype_odp=filetype:odp\tla...

# Tarefas em segundo plano

Você pode definir tarefas em segundo plano a serem executadas _ após _ retornar uma resposta.

Isso é útil para operações que precisam acontecer após uma solicitação, mas que o cliente realmente não precisa esperar a operação ser concluída para receber a resposta.

Isso inclui, por exemplo:

- Envio de notificações por email após a realização de uma ação:

<meta name="viewport" content="width=device-width, initial-scale=1">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title><la:message key="labels.search_title" /></title>
<c:if test="${osddLink}">
	<link rel="search" type="application/opensearchdescription+xml"
		href="${fe:url('/osdd')}"
		title="<la:message key="labels.index_osdd_title" />" />
</c:if>
<link href="${fe:url('/css/bootstrap.min.css')}" rel="stylesheet"
	type="text/css" />

<meta name="viewport" content="width=device-width, initial-scale=1">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title><la:message key="labels.search_title" /></title>
<c:if test="${osddLink}">
	<link rel="search" type="application/opensearchdescription+xml"
		href="${fe:url('/osdd')}"
		title="<la:message key="labels.index_osdd_title" />" />
</c:if>
<link href="${fe:url('/css/bootstrap.min.css')}" rel="stylesheet"
	type="text/css" />

							<em class="fa fa-arrow-circle-left">
							<la:message key="labels.profile.back" />
						</la:link>
						<button type="submit" name="changePassword"
							class="btn btn-success"
							value="<la:message key="labels.profile.update"/>">
							<em class="fa fa-pencil-alt">
							<la:message key="labels.profile.update" />
						</button>
					</div>
				</la:form>
			</div>
		</div>