diff --git a/src/Console/AddRecordCommand.php b/src/Console/AddRecordCommand.php
index 95137fa..807ce70 100644
--- a/src/Console/AddRecordCommand.php
+++ b/src/Console/AddRecordCommand.php
@@ -23,8 +23,11 @@
 namespace OCC\OaiPmh2\Console;
 
 use OCC\OaiPmh2\Database;
+use OCC\OaiPmh2\Database\Format;
+use OCC\OaiPmh2\Database\Record;
 use Symfony\Component\Console\Attribute\AsCommand;
 use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 
@@ -40,6 +43,36 @@
 )]
 class AddRecordCommand extends Command
 {
+    /**
+     * Configures the current command.
+     *
+     * @return void
+     */
+    protected function configure(): void
+    {
+        $this->addArgument(
+            'identifier',
+            InputArgument::REQUIRED,
+            'The record identifier.'
+        );
+        $this->addArgument(
+            'format',
+            InputArgument::REQUIRED,
+            'The metadata prefix.'
+        );
+        $this->addArgument(
+            'file',
+            InputArgument::REQUIRED,
+            'The file containing the record content.'
+        );
+        $this->addArgument(
+            'sets',
+            InputArgument::IS_ARRAY | InputArgument::OPTIONAL,
+            'The list of sets to associate the record with.'
+        );
+        parent::configure();
+    }
+
     /**
      * Executes the current command.
      *
@@ -50,7 +83,42 @@ class AddRecordCommand extends Command
      */
     protected function execute(InputInterface $input, OutputInterface $output): int
     {
+        /** @var array<string, string> */
+        $arguments = $input->getArguments();
+        /** @var Format */
+        $format = Database::getInstance()->getEntityManager()->getReference(Format::class, $arguments['format']);
+
+        $content = file_get_contents($arguments['file']);
+        if ($content === false) {
+            $output->writeln([
+                '',
+                sprintf(
+                    ' [ERROR] File "%s" not found or not readable. ',
+                    $arguments['file']
+                ),
+                ''
+            ]);
+            return Command::INVALID;
+        }
+
+        $record = new Record($arguments['identifier'], $format);
+        if (trim($content) !== '') {
+            $record->setContent($content);
+        }
+        // TODO: Add full set support.
+
+        Database::getInstance()->addOrUpdateRecord($record);
         Database::getInstance()->pruneOrphanSets();
+
+        $output->writeln([
+            '',
+            sprintf(
+                ' [OK] Record "%s" with metadata prefix "%s" added or updated successfully! ',
+                $arguments['identifier'],
+                $arguments['format']
+            ),
+            ''
+        ]);
         return Command::SUCCESS;
     }
 }
diff --git a/src/Console/DeleteRecordCommand.php b/src/Console/DeleteRecordCommand.php
index 5ce84f8..c0b5e76 100644
--- a/src/Console/DeleteRecordCommand.php
+++ b/src/Console/DeleteRecordCommand.php
@@ -24,8 +24,11 @@
 
 use OCC\OaiPmh2\Configuration;
 use OCC\OaiPmh2\Database;
+use OCC\OaiPmh2\Database\Format;
+use OCC\OaiPmh2\Database\Record;
 use Symfony\Component\Console\Attribute\AsCommand;
 use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Output\OutputInterface;
 
@@ -41,6 +44,26 @@
 )]
 class DeleteRecordCommand extends Command
 {
+    /**
+     * Configures the current command.
+     *
+     * @return void
+     */
+    protected function configure(): void
+    {
+        $this->addArgument(
+            'identifier',
+            InputArgument::REQUIRED,
+            'The record identifier.'
+        );
+        $this->addArgument(
+            'format',
+            InputArgument::REQUIRED,
+            'The metadata prefix.'
+        );
+        parent::configure();
+    }
+
     /**
      * Executes the current command.
      *
@@ -51,8 +74,42 @@ class DeleteRecordCommand extends Command
      */
     protected function execute(InputInterface $input, OutputInterface $output): int
     {
-        $policy = Configuration::getInstance()->deletedRecords;
-        Database::getInstance()->pruneOrphanSets();
-        return Command::SUCCESS;
+        /** @var array<string, string> */
+        $arguments = $input->getArguments();
+        $entityManager = Database::getInstance()->getEntityManager();
+
+        $format = $entityManager->getReference(Format::class, $arguments['format']);
+        $record = $entityManager->find(
+            Record::class,
+            [
+                'identifier' => $arguments['identifier'],
+                'format' => $format
+            ]
+        );
+
+        if (isset($record)) {
+            Database::getInstance()->deleteRecord($record);
+            $output->writeln([
+                '',
+                sprintf(
+                    ' [OK] Record "%s" with metadata prefix "%s" successfully deleted. ',
+                    $arguments['identifier'],
+                    $arguments['format']
+                ),
+                ''
+            ]);
+            return Command::SUCCESS;
+        } else {
+            $output->writeln([
+                '',
+                sprintf(
+                    ' [ERROR] Record "%s" with metadata prefix "%s" not found. ',
+                    $arguments['identifier'],
+                    $arguments['format']
+                ),
+                ''
+            ]);
+            return Command::FAILURE;
+        }
     }
 }
diff --git a/src/Console/UpdateFormatsCommand.php b/src/Console/UpdateFormatsCommand.php
index 3111df0..ac35337 100644
--- a/src/Console/UpdateFormatsCommand.php
+++ b/src/Console/UpdateFormatsCommand.php
@@ -93,7 +93,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
         }
         foreach (array_keys($inDatabase) as $prefix) {
             if (!in_array($prefix, array_keys($formats), true)) {
-                Database::getInstance()->removeMetadataFormat($inDatabase[$prefix]);
+                Database::getInstance()->deleteMetadataFormat($inDatabase[$prefix]);
                 ++$deleted;
                 $output->writeln([
                     sprintf(
diff --git a/src/Database.php b/src/Database.php
index c76c459..eb74445 100644
--- a/src/Database.php
+++ b/src/Database.php
@@ -420,13 +420,13 @@ public function pruneResumptionTokens(): int
     }
 
     /**
-     * Remove metadata format and all associated records.
+     * Delete metadata format and all associated records.
      *
      * @param Format $format The metadata format
      *
      * @return void
      */
-    public function removeMetadataFormat(Format $format): void
+    public function deleteMetadataFormat(Format $format): void
     {
         $repository = $this->entityManager->getRepository(Record::class);
         $criteria = Criteria::create()->where(Criteria::expr()->eq('format', $format));
@@ -439,6 +439,25 @@ public function removeMetadataFormat(Format $format): void
         $this->pruneOrphanSets();
     }
 
+    /**
+     * Delete a record.
+     *
+     * @param Record $record The record
+     *
+     * @return void
+     */
+    public function deleteRecord(Record $record): void
+    {
+        if (Configuration::getInstance()->deletedRecords === 'no') {
+            $this->entityManager->remove($record);
+        } else {
+            $record->setContent(null);
+            $record->setLastChanged(new DateTime());
+        }
+        $this->entityManager->flush();
+        $this->pruneOrphanSets();
+    }
+
     /**
      * This is a singleton class, thus the constructor is private.
      *
diff --git a/src/Middleware/Dispatcher.php b/src/Middleware/Dispatcher.php
index 8f0db37..b8f2fb8 100644
--- a/src/Middleware/Dispatcher.php
+++ b/src/Middleware/Dispatcher.php
@@ -103,6 +103,7 @@ protected function processResponse(ResponseInterface $response): ResponseInterfa
     {
         // TODO: Add support for content compression
         // https://openarchives.org/OAI/openarchivesprotocol.html#ResponseCompression
+        // https://github.com/middlewares/encoder
         return $response->withHeader('Content-Type', 'text/xml');
     }
 
diff --git a/src/Middleware/Identify.php b/src/Middleware/Identify.php
index ffab658..6cd8e75 100644
--- a/src/Middleware/Identify.php
+++ b/src/Middleware/Identify.php
@@ -81,9 +81,12 @@ protected function prepareResponse(ServerRequestInterface $request): void
         $granularity = $document->createElement('granularity', 'YYYY-MM-DDThh:mm:ssZ');
         $identify->appendChild($granularity);
 
-        // TODO: Add support for content compression
-        // $compression = $document->createElement('compression', '...');
-        // $identify->appendChild($compression);
+        // TODO: Implement explicit content compression support.
+        // $compressionDeflate = $document->createElement('compression', 'deflate');
+        // $identify->appendChild($compressionDeflate);
+
+        // $compressionGzip = $document->createElement('compression', 'gzip');
+        // $identify->appendChild($compressionGzip);
 
         $this->preparedResponse = $document;
     }