diff --git a/src/db/Capacitor.php b/src/db/Capacitor.php
new file mode 100644
index 0000000..d6c8d0f
--- /dev/null
+++ b/src/db/Capacitor.php
@@ -0,0 +1,45 @@
+<?php
+namespace nur\sery\db;
+
+/**
+ * Class Capacitor: un objet permettant d'attaquer un canal spécique d'une
+ * instance de {@link ICapacitor}
+ */
+class Capacitor {
+  function __construct(ICapacitor $capacitor, CapacitorChannel $channel) {
+    $this->capacitor = $capacitor;
+    $this->channel = $channel;
+  }
+
+  protected $capacitor;
+
+  protected $channel;
+
+  function exists(): bool {
+    return $this->capacitor->_exists($this->channel);
+  }
+
+  function reset(): void {
+    $this->capacitor->_reset($this->channel);
+  }
+
+  function charge($item) {
+    $this->capacitor->_charge($item, $this->channel);
+  }
+
+  function discharge($keys=null, ?bool $reset=null): iterable {
+    return $this->capacitor->_discharge($keys, $this->channel, $reset);
+  }
+
+  function get($keys) {
+    return $this->capacitor->_get($keys, $this->channel);
+  }
+
+  function each($keys, callable $func, ?array $args=null): void {
+    $this->capacitor->_each($keys, $func, $args, $this->channel);
+  }
+
+  function close(): void {
+    $this->capacitor->close();
+  }
+}
diff --git a/src/db/CapacitorChannel.php b/src/db/CapacitorChannel.php
new file mode 100644
index 0000000..2158120
--- /dev/null
+++ b/src/db/CapacitorChannel.php
@@ -0,0 +1,48 @@
+<?php
+namespace nur\sery\db;
+
+/**
+ * Class CapacitorChannel: un canal d'une instance de {@link ICapacitor}
+ */
+class CapacitorChannel {
+  const NAME = null;
+
+  static function verifix_name(?string $name): string {
+    if ($name === null) $name = "default";
+    return strtolower($name);
+  }
+
+  function __construct(?string $name=null) {
+    $this->name = self::verifix_name($name ?? static::NAME);
+    $this->created = false;
+  }
+
+  /** @var string */
+  protected $name;
+
+  function getName(): string {
+    return $this->name;
+  }
+
+  function getTableName(): string {
+    return $this->name."_channel";
+  }
+
+  protected $created;
+
+  function isCreated(): bool {
+    return $this->created;
+  }
+
+  function setCreated(bool $created=true): void {
+    $this->created = $created;
+  }
+
+  function getKeyDefinitions(): ?array {
+    return null;
+  }
+
+  function getKeyValues($item): ?array {
+    return null;
+  }
+}
diff --git a/src/db/ICapacitor.php b/src/db/ICapacitor.php
new file mode 100644
index 0000000..9ff0c4a
--- /dev/null
+++ b/src/db/ICapacitor.php
@@ -0,0 +1,39 @@
+<?php
+namespace nur\sery\db;
+
+/**
+ * Interface ICapacitor: objet permettant d'accumuler des données pour les
+ * réutiliser plus tard
+ */
+interface ICapacitor {
+  /** tester si le canal spécifié existe */
+  function exists(?string $channel=null): bool;
+
+  /** supprimer le canal spécifié */
+  function reset(?string $channel=null): void;
+
+  /** charger une valeur dans le canal */
+  function charge($item, ?string $channel=null): void;
+
+  /** décharger les données du canal spécifié */
+  function discharge($keys=null, ?string $channel=null, ?bool $reset=null): iterable;
+
+  /**
+   * obtenir l'élément identifié par les clés spécifiées sur le canal spécifié
+   *
+   * si $keys n'est pas un tableau, il est transformé en ["_id" => $keys]
+   */
+  function get($keys, ?string $channel=null);
+
+  /**
+   * appeler une fonction pour chaque élément du canal spécifié.
+   *
+   * $keys permet de filtrer parmi les élements chargés
+   *
+   * si $func retourne un tableau, il est utilisé pour mettre à jour
+   * l'enregistrement.
+   */
+  function each($keys, callable $func, ?array $args=null, ?string $channel=null): void;
+
+  function close(): void;
+}
diff --git a/src/db/sqlite/SqliteCapacitor.php b/src/db/sqlite/SqliteCapacitor.php
index 8cf075b..0ed1ae0 100644
--- a/src/db/sqlite/SqliteCapacitor.php
+++ b/src/db/sqlite/SqliteCapacitor.php
@@ -2,14 +2,15 @@
 namespace nur\sery\db\sqlite;
 
 use nur\sery\cl;
+use nur\sery\db\CapacitorChannel;
+use nur\sery\db\ICapacitor;
 use nur\sery\php\func;
 use nur\sery\ValueException;
 
 /**
- * Class SqliteCapacitor: objet permettant d'accumuler des données pour les
- * réutiliser plus tard
+ * Class SqliteCapacitor
  */
-class SqliteCapacitor {
+class SqliteCapacitor implements ICapacitor {
   function __construct($sqlite) {
     $this->sqlite = Sqlite::with($sqlite);
   }
@@ -21,87 +22,114 @@ class SqliteCapacitor {
     return $this->sqlite;
   }
 
-  protected function getTableName(?string $channel): string {
-    return ($channel ?? "default")."_channel";
+  protected function _create(CapacitorChannel $channel): void {
+    if (!$channel->isCreated()) {
+      $columns = cl::merge([
+        "_id" => "integer primary key autoincrement",
+        "_item" => "text",
+      ], $channel->getKeyDefinitions());
+      $this->sqlite->exec([
+        "create table if not exists",
+        "table" => $channel->getTableName(),
+        "cols" => $columns,
+      ]);
+      $channel->setCreated();
+    }
+  }
+
+  /** @var CapacitorChannel[] */
+  protected $channels;
+
+  function addChannel(CapacitorChannel $channel): CapacitorChannel {
+    $this->_create($channel);
+    $this->channels[$channel->getName()] = $channel;
+    return $channel;
+  }
+
+  protected function channel(?string $name=null): CapacitorChannel {
+    $name = CapacitorChannel::verifix_name($name);
+    $channel = $this->channels[$name] ?? null;
+    if ($channel === null) {
+      $channel = $this->addChannel(new CapacitorChannel($name));
+    }
+    return $channel;
+  }
+
+  function _exists(CapacitorChannel $channel): bool {
+    $tableName = $this->sqlite->get([
+      "select name from sqlite_schema",
+      "where" => [
+        "name" => $channel->getTableName(),
+      ],
+    ]);
+    return $tableName !== null;
   }
 
   /** tester si le canal spécifié existe */
   function exists(?string $channel=null): bool {
-    #XXX maintenir une table channels avec la liste des canaux valides
+    return $this->_exists($this->channel($channel));
+  }
+
+  function _reset(CapacitorChannel $channel): void {
+    $this->sqlite->exec([
+      "drop table if exists",
+      $channel->getTableName(),
+    ]);
+    $channel->setCreated(false);
   }
 
   /** supprimer le canal spécifié */
-  function reset(?string $channel=null) {
-    $tableName = $this->getTableName($channel);
-    $this->sqlite->exec("drop table if exists $tableName");
-    #XXX maj de la tables channels dans une transaction
+  function reset(?string $channel=null): void {
+    $this->_reset($this->channel($channel));
   }
 
-  /** @var array */
-  protected $created;
-
-  protected function getKeyDefinitions(?string $channel): ?array {
-    return null;
-  }
-
-  protected function getKeyValues($item, ?string $channel): ?array {
-    return null;
-  }
-
-  protected function create(?string $channel): void {
-    if ($this->created[$channel] ?? false) return;
-    $columns = cl::merge([
-      "_id" => "integer primary key autoincrement",
-      "_item" => "text",
-    ], $this->getKeyDefinitions($channel));
-    #XXXvvv migrer vers la syntaxe tableau de create
-    $index = 0;
-    foreach ($columns as $column => &$definition) {
-      if ($column === $index) {
-        $index++;
-      } else {
-        $definition = "$column $definition";
-      }
-    }; unset($definition);
-    $query = implode("", [
-      "create table if not exists ",
-      $this->getTableName($channel),
-      " (",
-      implode(", ", $columns),
-      ")",
-    ]);
-    #XXX^^^ migrer vers la syntaxe tableau de create
-    $this->sqlite->exec($query);
-    #XXX maj de la tables channels dans une transaction
-    $this->created[$channel] = true;
-  }
-
-  function charge($item, ?string $channel=null) {
-    $this->create($channel);
-    $values = cl::merge($this->getKeyValues($item, $channel), [
+  function _charge($item, CapacitorChannel $channel): void {
+    $this->_create($channel);
+    $values = cl::merge($channel->getKeyValues($item), [
       "_item" => serialize($item),
     ]);
     $this->sqlite->exec([
       "insert",
-      "into" => $this->getTableName($channel),
+      "into" => $channel->getTableName(),
       "values" => $values,
     ]);
   }
 
-  /** décharger les données du canal spécifié */
-  function discharge($keys=null, ?string $channel=null, ?bool $reset=null): iterable {
+  /** charger une valeur dans le canal */
+  function charge($item, ?string $channel=null): void {
+    $this->_charge($item, $this->channel($channel));
+  }
+
+  function _discharge($keys=null, CapacitorChannel $channel=null, ?bool $reset=null): iterable {
     if ($keys !== null && !is_array($keys)) $keys = ["_id" => $keys];
     if ($reset === null) $reset = $keys === null;
     $rows = $this->sqlite->all([
       "select _item",
-      "from" => $this->getTableName($channel),
+      "from" => $channel->getTableName(),
       "where" => $keys,
     ]);
     foreach ($rows as $row) {
       $item = unserialize($row['_item']);
       yield $item;
     }
-    if ($reset) $this->reset($channel);
+    if ($reset) $this->_reset($channel);
+  }
+
+  /** décharger les données du canal spécifié */
+  function discharge($keys=null, ?string $channel=null, ?bool $reset=null): iterable {
+    return $this->_discharge($keys, $this->channel($channel), $reset);
+  }
+
+  function _get($keys, CapacitorChannel $channel=null) {
+    if ($keys === null) throw ValueException::null("keys");
+    if (!is_array($keys)) $keys = ["_id" => $keys];
+    $row = $this->sqlite->one([
+      "select _item",
+      "from" => $channel->getTableName(),
+      "where" => $keys,
+    ]);
+    if ($row === null) return null;
+    else return unserialize($row["_item"]);
   }
 
   /**
@@ -110,30 +138,14 @@ class SqliteCapacitor {
    * si $keys n'est pas un tableau, il est transformé en ["_id" => $keys]
    */
   function get($keys, ?string $channel=null) {
-    if ($keys === null) throw ValueException::null("keys");
-    if (!is_array($keys)) $keys = ["_id" => $keys];
-    $row = $this->sqlite->one([
-      "select _item",
-      "from" => $this->getTableName($channel),
-      "where" => $keys,
-    ]);
-    if ($row === null) return null;
-    else return unserialize($row["_item"]);
+    return $this->_get($keys, $this->channel($channel));
   }
 
-  /**
-   * appeler une fonction pour chaque élément du canal spécifié.
-   *
-   * $keys permet de filtrer parmi les élements chargés
-   *
-   * si $func retourne un tableau, il est utilisé pour mettre à jour
-   * l'enregistrement.
-   */
-  function each($keys, callable $func, ?array $args=null, ?string $channel=null): void {
+  function _each($keys, callable $func, ?array $args=null, CapacitorChannel $channel=null): void {
     if ($keys !== null && !is_array($keys)) $keys = ["_id" => $keys];
     $context = func::_prepare($func);
     $sqlite = $this->sqlite;
-    $tableName = $this->getTableName($channel);
+    $tableName = $channel->getTableName();
     $rows = $sqlite->all([
       "select",
       "from" => $tableName,
@@ -147,20 +159,28 @@ class SqliteCapacitor {
         if (array_key_exists("_item", $updates)) {
           $updates["_item"] = serialize($updates["_item"]);
         }
-        #XXXvvv migrer vers la syntaxe tableau de update
-        $params = null;
-        $sql = ["update", $tableName, "set"];
-        _query::parse_set_values($updates, $setsql, $params);
-        $sql[] = implode(", ", $setsql);
-        $sql[] = "where";
-        _query::parse_conds(["_id" => $row["_id"]], $wheresql, $params);
-        $sql[] = implode(" and ", $wheresql);
-        $sqlite->exec(implode(" ", $sql), $params);
-        #XXX^^^ migrer vers la syntaxe tableau de update
+        $sqlite->exec([
+          "update",
+          "table" => $tableName,
+          "values" => $updates,
+          "where" => ["_id" => $row["_id"]],
+        ]);
       }
     }
   }
 
+  /**
+   * appeler une fonction pour chaque élément du canal spécifié.
+   *
+   * $keys permet de filtrer parmi les élements chargés
+   *
+   * si $func retourne un tableau, il est utilisé pour mettre à jour
+   * l'enregistrement.
+   */
+  function each($keys, callable $func, ?array $args=null, ?string $channel=null): void {
+    $this->_each($keys, $func, $args, $this->channel($channel));
+  }
+
   function close(): void {
     $this->sqlite->close();
   }
diff --git a/src/db/sqlite/_query.php b/src/db/sqlite/_query.php
index 110abfe..a89eca0 100644
--- a/src/db/sqlite/_query.php
+++ b/src/db/sqlite/_query.php
@@ -23,6 +23,8 @@ class _query {
         $query = _query_update::parse($query, $params);
       } elseif (_query_delete::isa($prefix)) {
         $query = _query_delete::parse($query, $params);
+      } elseif (_query_generic::isa($prefix)) {
+        $query = _query_generic::parse($query, $params);
       } else {
         throw SqliteException::wrap(ValueException::invalid_kind($query, "query"));
       }
diff --git a/src/db/sqlite/_query_create.php b/src/db/sqlite/_query_create.php
index 95b4b45..1dc9085 100644
--- a/src/db/sqlite/_query_create.php
+++ b/src/db/sqlite/_query_create.php
@@ -11,9 +11,37 @@ class _query_create extends _query {
   ];
 
   static function isa(string $sql): bool {
-    return false;
+    //return preg_match("/^create(?:\s+table)?\b/i", $sql);
+    #XXX implémentation minimale
+    return preg_match("/^create\s+table\b/i", $sql);
   }
 
   static function parse(array $query, ?array &$params=null): string {
+    #XXX implémentation minimale
+    $sql = [self::merge_seq($query)];
+
+    ## préfixe
+    if (($prefix = $query["prefix"] ?? null) !== null) $sql[] = $prefix;
+
+    ## table
+    $sql[] = $query["table"];
+
+    ## columns
+    $cols = $query["cols"];
+    $index = 0;
+    foreach ($cols as $col => &$definition) {
+      if ($col === $index) {
+        $index++;
+      } else {
+        $definition = "$col $definition";
+      }
+    }; unset($definition);
+    $sql[] = "(".implode(", ", $cols).")";
+
+    ## suffixe
+    if (($suffix = $query["suffix"] ?? null) !== null) $sql[] = $suffix;
+
+    ## fin de la requête
+    return implode(" ", $sql);
   }
 }
diff --git a/src/db/sqlite/_query_delete.php b/src/db/sqlite/_query_delete.php
index 8599b71..7ff9fb2 100644
--- a/src/db/sqlite/_query_delete.php
+++ b/src/db/sqlite/_query_delete.php
@@ -10,9 +10,35 @@ class _query_delete extends _query {
   ];
 
   static function isa(string $sql): bool {
-    return false;
+    //return preg_match("/^delete(?:\s+from)?\b/i", $sql);
+    #XXX implémentation minimale
+    return preg_match("/^delete\s+from\b/i", $sql);
   }
 
   static function parse(array $query, ?array &$params=null): string {
+    #XXX implémentation minimale
+    $sql = [self::merge_seq($query)];
+
+    ## préfixe
+    if (($prefix = $query["prefix"] ?? null) !== null) $sql[] = $prefix;
+
+    ## table
+    $sql[] = $query["table"];
+
+    ## where
+    $where = $query["where"] ?? null;
+    if ($where !== null) {
+      _query::parse_conds($where, $wheresql, $params);
+      if ($wheresql) {
+        $sql[] = "where";
+        $sql[] = implode(" and ", $wheresql);
+      }
+    }
+
+    ## suffixe
+    if (($suffix = $query["suffix"] ?? null) !== null) $sql[] = $suffix;
+
+    ## fin de la requête
+    return implode(" ", $sql);
   }
 }
diff --git a/src/db/sqlite/_query_generic.php b/src/db/sqlite/_query_generic.php
new file mode 100644
index 0000000..0201150
--- /dev/null
+++ b/src/db/sqlite/_query_generic.php
@@ -0,0 +1,18 @@
+<?php
+namespace nur\sery\db\sqlite;
+
+use nur\sery\cl;
+use nur\sery\ValueException;
+
+class _query_generic extends _query {
+  static function isa(string $sql): bool {
+    return preg_match('/^(?:drop\s+table)\b/i', $sql);
+  }
+
+  static function parse(array $query, ?array &$params=null): string {
+    if (!cl::is_list($query)) {
+      throw new ValueException("Seuls les tableaux séquentiels sont supportés");
+    }
+    return self::merge_seq($query);
+  }
+}
diff --git a/src/db/sqlite/_query_update.php b/src/db/sqlite/_query_update.php
index b4a0273..a58d07b 100644
--- a/src/db/sqlite/_query_update.php
+++ b/src/db/sqlite/_query_update.php
@@ -13,9 +13,38 @@ class _query_update extends _query {
   ];
 
   static function isa(string $sql): bool {
-    return false;
+    return preg_match("/^update\b/i", $sql);
   }
 
   static function parse(array $query, ?array &$params=null): string {
+    #XXX implémentation minimale
+    $sql = [self::merge_seq($query)];
+
+    ## préfixe
+    if (($prefix = $query["prefix"] ?? null) !== null) $sql[] = $prefix;
+
+    ## table
+    $sql[] = $query["table"];
+
+    ## set
+    _query::parse_set_values($query["values"], $setsql, $params);
+    $sql[] = "set";
+    $sql[] = implode(", ", $setsql);
+
+    ## where
+    $where = $query["where"] ?? null;
+    if ($where !== null) {
+      _query::parse_conds($where, $wheresql, $params);
+      if ($wheresql) {
+        $sql[] = "where";
+        $sql[] = implode(" and ", $wheresql);
+      }
+    }
+
+    ## suffixe
+    if (($suffix = $query["suffix"] ?? null) !== null) $sql[] = $suffix;
+
+    ## fin de la requête
+    return implode(" ", $sql);
   }
 }
diff --git a/tests/db/sqlite/SqliteCapacitorTest.php b/tests/db/sqlite/SqliteCapacitorTest.php
index 86b5fbb..134d610 100644
--- a/tests/db/sqlite/SqliteCapacitorTest.php
+++ b/tests/db/sqlite/SqliteCapacitorTest.php
@@ -1,6 +1,7 @@
 <?php
 namespace nur\sery\db\sqlite;
 
+use nur\sery\db\CapacitorChannel;
 use PHPUnit\Framework\TestCase;
 
 class SqliteCapacitorTest extends TestCase {
@@ -26,20 +27,16 @@ class SqliteCapacitorTest extends TestCase {
   }
 
   function testChargeArrays() {
-    $capacitor = new class(__DIR__.'/capacitor.db') extends SqliteCapacitor {
-      protected function getKeyDefinitions(?string $channel): ?array {
-        if ($channel === "arrays") {
-          return ["id" => "integer"];
-        }
-        return parent::getKeyDefinitions($channel);
+    $capacitor = new SqliteCapacitor(__DIR__.'/capacitor.db');
+    $capacitor->addChannel(new class extends CapacitorChannel {
+      const NAME = "arrays";
+      function getKeyDefinitions(): ?array {
+        return ["id" => "integer"];
       }
-      protected function getKeyValues($item, ?string $channel): ?array {
-        if ($channel === "arrays") {
-          return ["id" => $item["id"] ?? null];
-        }
-        return parent::getKeyValues($item, $channel);
+      function getKeyValues($item): ?array {
+        return ["id" => $item["id"] ?? null];
       }
-    };
+    });
 
     $this->_testChargeStrings($capacitor, "strings");
     $this->_testChargeArrays($capacitor, "arrays");
@@ -47,19 +44,21 @@ class SqliteCapacitorTest extends TestCase {
   }
 
   function testEach() {
-    $capacitor = new class(__DIR__.'/capacitor.db') extends SqliteCapacitor {
-      protected function getKeyDefinitions(?string $channel): ?array {
+    $capacitor = new SqliteCapacitor(__DIR__.'/capacitor.db');
+    $capacitor->addChannel(new class extends CapacitorChannel {
+      const NAME = "each";
+      function getKeyDefinitions(): ?array {
         return [
           "age" => "integer",
           "done" => "integer default 0",
         ];
       }
-      protected function getKeyValues($item, ?string $channel): ?array {
+      function getKeyValues($item): ?array {
         return [
           "age" => $item["age"],
         ];
       }
-    };
+    });
 
     $channel = "each";
     $capacitor->reset($channel);