diff --git a/bin/fact b/bin/fact
new file mode 120000
index 0000000000..9a84ebad20
--- /dev/null
+++ b/bin/fact
@@ -0,0 +1 @@
+../scripts/fact/manage_facts.php
\ No newline at end of file
diff --git a/scripts/fact/manage_facts.php b/scripts/fact/manage_facts.php
new file mode 100755
index 0000000000..fd075896d3
--- /dev/null
+++ b/scripts/fact/manage_facts.php
@@ -0,0 +1,42 @@
+#!/usr/bin/env php
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+$root = dirname(dirname(dirname(__FILE__)));
+require_once $root.'/scripts/__init_script__.php';
+
+$args = new PhutilArgumentParser($argv);
+$args->setTagline('manage fact configuration');
+$args->setSynopsis(<<<EOSYNOPSIS
+**fact** __command__ [__options__]
+    Manage and debug Phabricator data extraction, storage and
+    configuration used to compute statistics.
+
+EOSYNOPSIS
+  );
+$args->parseStandardArguments();
+
+$workflows = array(
+  new PhabricatorFactManagementDestroyWorkflow(),
+  new PhabricatorFactManagementAnalyzeWorkflow(),
+  new PhabricatorFactManagementStatusWorkflow(),
+  new PhabricatorFactManagementListWorkflow(),
+  new PhutilHelpArgumentWorkflow(),
+);
+
+$args->parseWorkflows($workflows);
diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index b72e2107eb..97cb7f8a83 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -624,7 +624,17 @@ phutil_register_library_map(array(
     'PhabricatorEventEngine' => 'infrastructure/events/PhabricatorEventEngine.php',
     'PhabricatorEventType' => 'infrastructure/events/constant/PhabricatorEventType.php',
     'PhabricatorExampleEventListener' => 'infrastructure/events/PhabricatorExampleEventListener.php',
-    'PhabricatorFactsUpdateIterator' => 'applications/facts/extract/PhabricatorFactsUpdateIterator.php',
+    'PhabricatorFactCountEngine' => 'applications/fact/engine/PhabricatorFactCountEngine.php',
+    'PhabricatorFactDAO' => 'applications/fact/storage/PhabricatorFactDAO.php',
+    'PhabricatorFactDaemon' => 'applications/fact/daemon/PhabricatorFactDaemon.php',
+    'PhabricatorFactEngine' => 'applications/fact/engine/PhabricatorFactEngine.php',
+    'PhabricatorFactManagementAnalyzeWorkflow' => 'applications/fact/management/PhabricatorFactManagementAnalyzeWorkflow.php',
+    'PhabricatorFactManagementDestroyWorkflow' => 'applications/fact/management/PhabricatorFactManagementDestroyWorkflow.php',
+    'PhabricatorFactManagementListWorkflow' => 'applications/fact/management/PhabricatorFactManagementListWorkflow.php',
+    'PhabricatorFactManagementStatusWorkflow' => 'applications/fact/management/PhabricatorFactManagementStatusWorkflow.php',
+    'PhabricatorFactManagementWorkflow' => 'applications/fact/management/PhabricatorFactManagementWorkflow.php',
+    'PhabricatorFactRaw' => 'applications/fact/storage/PhabricatorFactRaw.php',
+    'PhabricatorFactUpdateIterator' => 'applications/fact/extract/PhabricatorFactUpdateIterator.php',
     'PhabricatorFeedBuilder' => 'applications/feed/builder/PhabricatorFeedBuilder.php',
     'PhabricatorFeedConstants' => 'applications/feed/constants/PhabricatorFeedConstants.php',
     'PhabricatorFeedController' => 'applications/feed/controller/PhabricatorFeedController.php',
@@ -1650,7 +1660,16 @@ phutil_register_library_map(array(
     'PhabricatorEvent' => 'PhutilEvent',
     'PhabricatorEventType' => 'PhutilEventType',
     'PhabricatorExampleEventListener' => 'PhutilEventListener',
-    'PhabricatorFactsUpdateIterator' => 'PhutilBufferedIterator',
+    'PhabricatorFactCountEngine' => 'PhabricatorFactEngine',
+    'PhabricatorFactDAO' => 'PhabricatorLiskDAO',
+    'PhabricatorFactDaemon' => 'PhabricatorDaemon',
+    'PhabricatorFactManagementAnalyzeWorkflow' => 'PhabricatorFactManagementWorkflow',
+    'PhabricatorFactManagementDestroyWorkflow' => 'PhabricatorFactManagementWorkflow',
+    'PhabricatorFactManagementListWorkflow' => 'PhabricatorFactManagementWorkflow',
+    'PhabricatorFactManagementStatusWorkflow' => 'PhabricatorFactManagementWorkflow',
+    'PhabricatorFactManagementWorkflow' => 'PhutilArgumentWorkflow',
+    'PhabricatorFactRaw' => 'PhabricatorFactDAO',
+    'PhabricatorFactUpdateIterator' => 'PhutilBufferedIterator',
     'PhabricatorFeedController' => 'PhabricatorController',
     'PhabricatorFeedDAO' => 'PhabricatorLiskDAO',
     'PhabricatorFeedPublicStreamController' => 'PhabricatorFeedController',
diff --git a/src/applications/fact/daemon/PhabricatorFactDaemon.php b/src/applications/fact/daemon/PhabricatorFactDaemon.php
new file mode 100644
index 0000000000..4ef792e758
--- /dev/null
+++ b/src/applications/fact/daemon/PhabricatorFactDaemon.php
@@ -0,0 +1,121 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+final class PhabricatorFactDaemon extends PhabricatorDaemon {
+
+  private $engines;
+
+  const RAW_FACT_BUFFER_LIMIT = 128;
+
+  public function run() {
+    throw new Exception("This daemon doesn't do anything yet!");
+  }
+
+  public function setEngines(array $engines) {
+    assert_instances_of($engines, 'PhabricatorFactEngine');
+
+    $this->engines = $engines;
+    return $this;
+  }
+
+  public function processIterator($iterator) {
+    $result = null;
+
+    $raw_facts = array();
+    foreach ($iterator as $key => $object) {
+      $raw_facts[$object->getPHID()] = $this->computeRawFacts($object);
+      if (count($raw_facts) > self::RAW_FACT_BUFFER_LIMIT) {
+        $this->updateRawFacts($raw_facts);
+        $raw_facts = array();
+      }
+      $result = $key;
+    }
+
+    if ($raw_facts) {
+      $this->updateRawFacts($raw_facts);
+      $raw_facts = array();
+    }
+
+    return $result;
+  }
+
+  private function computeRawFacts(PhabricatorLiskDAO $object) {
+    $facts = array();
+    foreach ($this->engines as $engine) {
+      if (!$engine->shouldComputeRawFactsForObject($object)) {
+        continue;
+      }
+      $facts[] = $engine->computeRawFactsForObject($object);
+    }
+
+    return array_mergev($facts);
+  }
+
+  private function updateRawFacts(array $map) {
+    foreach ($map as $phid => $facts) {
+      assert_instances_of($facts, 'PhabricatorFactRaw');
+    }
+
+    $phids = array_keys($map);
+    if (!$phids) {
+      return;
+    }
+
+    $table = new PhabricatorFactRaw();
+    $conn = $table->establishConnection('w');
+    $table_name = $table->getTableName();
+
+    $sql = array();
+    foreach ($map as $phid => $facts) {
+      foreach ($facts as $fact) {
+        $sql[] = qsprintf(
+          $conn,
+          '(%s, %s, %s, %d, %d, %d)',
+          $fact->getFactType(),
+          $fact->getObjectPHID(),
+          $fact->getObjectA(),
+          $fact->getValueX(),
+          $fact->getValueY(),
+          $fact->getEpoch());
+      }
+    }
+
+    $table->openTransaction();
+
+      queryfx(
+        $conn,
+        'DELETE FROM %T WHERE objectPHID IN (%Ls)',
+        $table_name,
+        $phids);
+
+      if ($sql) {
+        foreach (array_chunk($sql, 256) as $chunk) {
+          queryfx(
+            $conn,
+            'INSERT INTO %T
+              (factType, objectPHID, objectA, valueX, valueY, epoch)
+              VALUES %Q',
+            $table_name,
+            implode(', ', $chunk));
+        }
+      }
+
+    $table->saveTransaction();
+  }
+
+}
diff --git a/src/applications/fact/engine/PhabricatorFactCountEngine.php b/src/applications/fact/engine/PhabricatorFactCountEngine.php
new file mode 100644
index 0000000000..d20df85ad8
--- /dev/null
+++ b/src/applications/fact/engine/PhabricatorFactCountEngine.php
@@ -0,0 +1,44 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Simple fact engine which counts objects.
+ */
+final class PhabricatorFactCountEngine extends PhabricatorFactEngine {
+
+  public function shouldComputeRawFactsForObject(PhabricatorLiskDAO $object) {
+    return true;
+  }
+
+  public function computeRawFactsForObject(PhabricatorLiskDAO $object) {
+    $facts = array();
+
+    $phid = $object->getPHID();
+    $type = phid_get_type($phid);
+
+    foreach (array('N:*', 'N:'.$type) as $fact_type) {
+      $facts[] = id(new PhabricatorFactRaw())
+        ->setFactType($fact_type)
+        ->setObjectPHID($phid)
+        ->setEpoch($object->getDateCreated());
+    }
+
+    return $facts;
+  }
+
+}
diff --git a/src/applications/fact/engine/PhabricatorFactEngine.php b/src/applications/fact/engine/PhabricatorFactEngine.php
new file mode 100644
index 0000000000..cd951e913f
--- /dev/null
+++ b/src/applications/fact/engine/PhabricatorFactEngine.php
@@ -0,0 +1,43 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+abstract class PhabricatorFactEngine {
+
+  final public static function loadAllEngines() {
+    $classes = id(new PhutilSymbolLoader())
+      ->setAncestorClass(__CLASS__)
+      ->setConcreteOnly(true)
+      ->selectAndLoadSymbols();
+
+    $objects = array();
+    foreach ($classes as $class) {
+      $objects[] = newv($class['name'], array());
+    }
+
+    return $objects;
+  }
+
+  public function shouldComputeRawFactsForObject(PhabricatorLiskDAO $object) {
+    return false;
+  }
+
+  public function computeRawFactsForObject(PhabricatorLiskDAO $object) {
+    return array();
+  }
+
+}
diff --git a/src/applications/facts/extract/PhabricatorFactsUpdateIterator.php b/src/applications/fact/extract/PhabricatorFactUpdateIterator.php
similarity index 97%
rename from src/applications/facts/extract/PhabricatorFactsUpdateIterator.php
rename to src/applications/fact/extract/PhabricatorFactUpdateIterator.php
index 19b1757396..b70a74a702 100644
--- a/src/applications/facts/extract/PhabricatorFactsUpdateIterator.php
+++ b/src/applications/fact/extract/PhabricatorFactUpdateIterator.php
@@ -21,7 +21,7 @@
  * for "normal" Lisk objects: objects with an autoincrement ID and a
  * dateModified column.
  */
-final class PhabricatorFactsUpdateIterator extends PhutilBufferedIterator {
+final class PhabricatorFactUpdateIterator extends PhutilBufferedIterator {
 
   private $cursor;
   private $object;
diff --git a/src/applications/fact/management/PhabricatorFactManagementAnalyzeWorkflow.php b/src/applications/fact/management/PhabricatorFactManagementAnalyzeWorkflow.php
new file mode 100644
index 0000000000..c864277741
--- /dev/null
+++ b/src/applications/fact/management/PhabricatorFactManagementAnalyzeWorkflow.php
@@ -0,0 +1,47 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+final class PhabricatorFactManagementAnalyzeWorkflow
+  extends PhabricatorFactManagementWorkflow {
+
+  public function didConstruct() {
+    $this
+      ->setName('analyze')
+      ->setSynopsis(pht('Manually invoke fact analyzers.'))
+      ->setArguments(array());
+  }
+
+  public function execute(PhutilArgumentParser $args) {
+    $console = PhutilConsole::getConsole();
+
+    $daemon = new PhabricatorFactDaemon(array());
+    $daemon->setVerbose(true);
+    $daemon->setEngines(PhabricatorFactEngine::loadAllEngines());
+
+    $iterators = array(
+      new PhabricatorFactUpdateIterator(new DifferentialRevision()),
+    );
+
+    foreach ($iterators as $iterator) {
+      $daemon->processIterator($iterator);
+    }
+
+    return 0;
+  }
+
+}
diff --git a/src/applications/fact/management/PhabricatorFactManagementDestroyWorkflow.php b/src/applications/fact/management/PhabricatorFactManagementDestroyWorkflow.php
new file mode 100644
index 0000000000..686c12fbbd
--- /dev/null
+++ b/src/applications/fact/management/PhabricatorFactManagementDestroyWorkflow.php
@@ -0,0 +1,58 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+final class PhabricatorFactManagementDestroyWorkflow
+  extends PhabricatorFactManagementWorkflow {
+
+  public function didConstruct() {
+    $this
+      ->setName('destroy')
+      ->setSynopsis(pht('Destroy all facts.'))
+      ->setArguments(array());
+  }
+
+  public function execute(PhutilArgumentParser $args) {
+    $console = PhutilConsole::getConsole();
+
+    $question = pht(
+      'Really destroy all facts? They will need to be rebuilt through '.
+      'analysis, which may take some time.');
+
+    $ok = $console->confirm($question, $default = false);
+    if (!$ok) {
+      return 1;
+    }
+
+    $tables = array();
+    $tables[] = new PhabricatorFactRaw();
+    foreach ($tables as $table) {
+      $conn = $table->establishConnection('w');
+      $name = $table->getTableName();
+
+      $console->writeOut("%s\n", pht("Destroying table '%s'...", $name));
+
+      queryfx(
+        $conn,
+        'TRUNCATE TABLE %T',
+        $name);
+    }
+
+    $console->writeOut("%s\n", pht('Done.'));
+  }
+
+}
diff --git a/src/applications/fact/management/PhabricatorFactManagementListWorkflow.php b/src/applications/fact/management/PhabricatorFactManagementListWorkflow.php
new file mode 100644
index 0000000000..b98a19cbc9
--- /dev/null
+++ b/src/applications/fact/management/PhabricatorFactManagementListWorkflow.php
@@ -0,0 +1,40 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+final class PhabricatorFactManagementListWorkflow
+  extends PhabricatorFactManagementWorkflow {
+
+  public function didConstruct() {
+    $this
+      ->setName('list')
+      ->setSynopsis(pht('Show a list of fact engines.'))
+      ->setArguments(array());
+  }
+
+  public function execute(PhutilArgumentParser $args) {
+    $console = PhutilConsole::getConsole();
+
+    $engines = PhabricatorFactEngine::loadAllEngines();
+    foreach ($engines as $engine) {
+      $console->writeOut("%s\n", get_class($engine));
+    }
+
+    return 0;
+  }
+
+}
diff --git a/src/applications/fact/management/PhabricatorFactManagementStatusWorkflow.php b/src/applications/fact/management/PhabricatorFactManagementStatusWorkflow.php
new file mode 100644
index 0000000000..114484f244
--- /dev/null
+++ b/src/applications/fact/management/PhabricatorFactManagementStatusWorkflow.php
@@ -0,0 +1,59 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+final class PhabricatorFactManagementStatusWorkflow
+  extends PhabricatorFactManagementWorkflow {
+
+  public function didConstruct() {
+    $this
+      ->setName('status')
+      ->setSynopsis(pht('Show status of fact data.'))
+      ->setArguments(array());
+  }
+
+  public function execute(PhutilArgumentParser $args) {
+    $console = PhutilConsole::getConsole();
+
+    $map = array(
+      'raw' => new PhabricatorFactRaw(),
+    );
+
+    foreach ($map as $type => $table) {
+      $conn = $table->establishConnection('r');
+      $name = $table->getTableName();
+
+      $row = queryfx_one(
+        $conn,
+        'SELECT COUNT(*) N FROM %T',
+        $name);
+
+      $n = $row['N'];
+
+      switch ($type) {
+        case 'raw':
+          $desc = pht('There are %d raw fact(s) in storage.', $n);
+          break;
+      }
+
+      $console->writeOut("%s\n", $desc);
+    }
+
+    return 0;
+  }
+
+}
diff --git a/src/applications/fact/management/PhabricatorFactManagementWorkflow.php b/src/applications/fact/management/PhabricatorFactManagementWorkflow.php
new file mode 100644
index 0000000000..5400a4ff0a
--- /dev/null
+++ b/src/applications/fact/management/PhabricatorFactManagementWorkflow.php
@@ -0,0 +1,26 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+abstract class PhabricatorFactManagementWorkflow
+  extends PhutilArgumentWorkflow {
+
+  public function isExecutable() {
+    return true;
+  }
+
+}
diff --git a/src/applications/fact/storage/PhabricatorFactDAO.php b/src/applications/fact/storage/PhabricatorFactDAO.php
new file mode 100644
index 0000000000..b1ec770235
--- /dev/null
+++ b/src/applications/fact/storage/PhabricatorFactDAO.php
@@ -0,0 +1,31 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+abstract class PhabricatorFactDAO extends PhabricatorLiskDAO {
+
+  public function getApplicationName() {
+    return 'fact';
+  }
+
+  public function getConfiguration() {
+    return array(
+      self::CONFIG_TIMESTAMPS => false,
+    ) + parent::getConfiguration();
+  }
+
+}
diff --git a/src/applications/fact/storage/PhabricatorFactRaw.php b/src/applications/fact/storage/PhabricatorFactRaw.php
new file mode 100644
index 0000000000..446d8f5afc
--- /dev/null
+++ b/src/applications/fact/storage/PhabricatorFactRaw.php
@@ -0,0 +1,32 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Raw fact about an object.
+ */
+final class PhabricatorFactRaw extends PhabricatorFactDAO {
+
+  protected $id;
+  protected $factType;
+  protected $objectPHID;
+  protected $objectA;
+  protected $valueX;
+  protected $valueY;
+  protected $epoch;
+
+}
diff --git a/src/infrastructure/internationalization/PhabricatorBaseEnglishTranslation.php b/src/infrastructure/internationalization/PhabricatorBaseEnglishTranslation.php
index 0567a11a6a..c92e78e5ce 100644
--- a/src/infrastructure/internationalization/PhabricatorBaseEnglishTranslation.php
+++ b/src/infrastructure/internationalization/PhabricatorBaseEnglishTranslation.php
@@ -121,6 +121,11 @@ abstract class PhabricatorBaseEnglishTranslation
       'changed %d revision(s), added %d: %s; removed %d: %s' =>
         'changed revisions, added %3$s; removed %5$s',
 
+      'There are %d raw fact(s) in storage.' => array(
+        'There is %d raw fact in storage.',
+        'There are %d raw facts in storage.',
+      ),
+
     );
   }