diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..57872d0
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/vendor/
diff --git a/autoloader.php b/autoloader.php
new file mode 100644
index 0000000..6a689ea
--- /dev/null
+++ b/autoloader.php
@@ -0,0 +1,50 @@
+<?php
+/**
+ * Autoloader.
+ *
+ * @package     Database
+ * @copyright   Copyright (c) 2021
+ * @license     https://opensource.org/licenses/gpl-2.0.php GNU Public License
+ * @since       2.0.0
+ */
+
+// Exit if accessed directly.
+defined( 'ABSPATH' ) || exit;
+
+// Register a closure to autoload BerlinDB.
+spl_autoload_register(
+
+	/**
+	 * Closure of the autoloader.
+	 *
+	 * @param string $class_name The fully-qualified class name.
+	 * @return void
+	 */
+	static function ( $class_name = '' ) {
+
+		// Project namespace & length.
+		$project_namespace = 'BerlinDB\\Database\\';
+		$length            = strlen( $project_namespace );
+
+		// Bail if class is not in this namespace.
+		if ( 0 !== strncmp( $project_namespace, $class_name, $length ) ) {
+			return;
+		}
+
+		// Setup file parts.
+		$format = '%1$s/src/%2$s.php';
+		$path   = __DIR__;
+		$name   = str_replace( '\\', '/', substr( $class_name, $length ) );
+
+		// Parse class and namespace to file.
+		$file   = sprintf( $format, $path, $name );
+
+		// Bail if file does not exist.
+		if ( ! is_file( $file ) ) {
+			return;
+		}
+
+		// Require the file.
+		require_once $file;
+	}
+);
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..04716c1
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,12 @@
+{
+  "name": "berlindb/core",
+  "description": "A collection of PHP classes and functions that aims to provide an ORM-like experience and interface to WordPress database tables.",
+  "type": "library",
+  "license": "GPL-2.0-only",
+  "require": {},
+  "autoload": {
+    "psr-4": {
+      "BerlinDB\\": "src/"
+    }
+  }
+}
\ No newline at end of file
diff --git a/base.php b/src/Database/Base.php
similarity index 100%
rename from base.php
rename to src/Database/Base.php
diff --git a/column.php b/src/Database/Column.php
similarity index 100%
rename from column.php
rename to src/Database/Column.php
diff --git a/compare.php b/src/Database/Queries/Compare.php
similarity index 100%
rename from compare.php
rename to src/Database/Queries/Compare.php
diff --git a/date.php b/src/Database/Queries/Date.php
similarity index 100%
rename from date.php
rename to src/Database/Queries/Date.php
diff --git a/meta.php b/src/Database/Queries/Meta.php
similarity index 100%
rename from meta.php
rename to src/Database/Queries/Meta.php
diff --git a/query.php b/src/Database/Query.php
similarity index 100%
rename from query.php
rename to src/Database/Query.php
diff --git a/row.php b/src/Database/Row.php
similarity index 100%
rename from row.php
rename to src/Database/Row.php
diff --git a/schema.php b/src/Database/Schema.php
similarity index 100%
rename from schema.php
rename to src/Database/Schema.php
diff --git a/table.php b/src/Database/Table.php
similarity index 100%
rename from table.php
rename to src/Database/Table.php