diff --git a/src/web/server/setup/connect_db.php b/src/web/server/setup/connect_db.php
index fb5041e..a42d6f7 100644
--- a/src/web/server/setup/connect_db.php
+++ b/src/web/server/setup/connect_db.php
@@ -21,4 +21,10 @@ if ($db_conn->connect_error) {
 $query = "USE jisangs";
 $result = mysqli_query($db_conn, $query);
 
+
+function send_error_message($replyJSON, $error_message) {
+	$replyJSON["ERROR"] = $error_message;
+	echo json_encode($replyJSON, JSON_UNESCAPED_UNICODE);
+}
+
 ?>
\ No newline at end of file
diff --git a/src/web/server/user/login.php b/src/web/server/user/login.php
index 3cdf2b3..5e5fd85 100644
--- a/src/web/server/user/login.php
+++ b/src/web/server/user/login.php
@@ -18,32 +18,56 @@ if(!is_numeric($enterCode)) {
 
 include "./../setup/connect_db.php";
 
-$return_array = array();
+$maestro_id = get_maestro_id($maestro_name);
+if($maestro_id == null) {
+	send_error_message($replyJSON, "no maestro id");
+	exit;
+}
 
-$query = "SELECT MaestroID FROM moty_maestro WHERE Name=?";
-$stmt = $db_conn->prepare($query);
-$stmt->bind_param('s', $maestro_name);
-$stmt->execute();
-$stmt->bind_result($maestro_id);
-// while($stmt->fetch()) {
-// 	;
-// }
-$stmt->fetch();
-$stmt->close();
+$replyJSON = get_login_data($maestro_id, $name, $enterCode);
+if($replyJSON["UserID"] == null) {
+	send_error_message($replyJSON, "invalid username and entercode");
+	exit;
+}
 
-// $maestro_id = 1;
-$query = "SELECT UserID FROM moty_user WHERE MaestroID=? AND Name=? AND enterCode=?";
-$stmt = $db_conn->prepare($query);
-$stmt->bind_param('iss', $maestro_id, $name, $enterCode);
-$stmt->execute();
-$stmt->bind_result($user_id);
-// while($stmt->fetch())
-$stmt->fetch();
-$stmt->close();
-$db_conn->close();
+echo json_encode($replyJSON, JSON_UNESCAPED_UNICODE);
 
-$jsonUserData["MaestroID"] = $maestro_id;
-$jsonUserData["UserID"] = $user_id;
-echo json_encode($jsonUserData, JSON_UNESCAPED_UNICODE);
+
+
+function get_maestro_id($maestro_name) {
+	global $db_conn;
+
+	$query = "SELECT MaestroID FROM moty_maestro WHERE Name=?";
+	$stmt = $db_conn->prepare($query);
+	$stmt->bind_param('s', $maestro_name);
+	$stmt->execute();
+	$stmt->bind_result($maestro_id);
+	// while($stmt->fetch()) {
+	// 	;
+	// }
+	$stmt->fetch();
+	$stmt->close();
+
+	return $maestro_id;
+}
+
+function get_login_data($maestro_id, $name, $enterCode) {
+	global $db_conn;
+
+	$query = "SELECT UserID FROM moty_user WHERE MaestroID=? AND Name=? AND enterCode=?";
+	$stmt = $db_conn->prepare($query);
+	$stmt->bind_param('iss', $maestro_id, $name, $enterCode);
+	$stmt->execute();
+	$stmt->bind_result($user_id);
+	// while($stmt->fetch())
+	$stmt->fetch();
+	$stmt->close();
+	$db_conn->close();
+
+	$replyJSON["MaestroID"] = $maestro_id;
+	$replyJSON["UserID"] = $user_id;
+
+	return $replyJSON;
+}
 
 ?>
\ No newline at end of file
diff --git a/src/web/sql/insert_app.sql b/src/web/sql/insert_app.sql
new file mode 100644
index 0000000..bf23e51
--- /dev/null
+++ b/src/web/sql/insert_app.sql
@@ -0,0 +1,35 @@
+USE jisangs;
+
+INSERT INTO moty_app VALUES
+	(1, 'korean_basic', 1),
+	(2, 'korean_left_upper', 1),
+	(3, 'korean_second_finger', 1),
+	(4, 'korean_right_upper', 1),
+	(5, 'korean_left_lower', 1),
+	(6, 'korean_right_lower', 1),
+	(7, 'korean_left_upper_double', 1),
+	(8, 'korean_right_upper_double', 1),
+	(9, 'korean_word', 1),
+	(10, 'korean_sentence', 1),
+
+	(11, 'english_basic', 1),
+	(12, 'english_left_upper', 1),
+	(13, 'english_second_finger', 1),
+	(14, 'english_right_upper', 1),
+	(15, 'english_left_lower', 1),
+	(16, 'english_right_lower', 1),
+	(19, 'english_word', 1),
+	(20, 'english_sentence', 1);
+
+INSERT INTO moty_app VALUES
+	(101, 'space_invaders', 101);
+
+
+
+INSERT INTO moty_activate_app VALUES
+	(1, 1, 1),
+	(2, 1, 9),
+	(3, 1, 10),
+	(4, 1, 19),
+	(5, 1, 20),
+	(6, 1, 101);
diff --git a/src/web/sql/make_db.sql b/src/web/sql/make_db.sql
new file mode 100644
index 0000000..83f1e71
--- /dev/null
+++ b/src/web/sql/make_db.sql
@@ -0,0 +1,65 @@
+CREATE TABLE moty_maestro (
+	MaestroID INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	Name CHAR(50) NOT NULL,
+	EnterCode CHAR(10) NOT NULL,
+	Email CHAR(50) NOT NULL,
+	AccountType INT UNSIGNED NOT NULL,
+	AccountStatus INT UNSIGNED NOT NULL,
+	UserCount INT UNSIGNED NOT NULL,
+	AcceptClausesDateTime DATETIME NOT NULL,
+	MaestroTestID INT UNSIGNED
+);
+
+CREATE TABLE moty_user (
+	UserID INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	MaestroID INT UNSIGNED NOT NULL,
+	Name CHAR(50) NOT NULL,
+	EnterCode CHAR(6) NOT NULL
+
+	FOREIGN KEY (MaestroID) REFERENCES moty_maestro(MaestroID)
+);
+
+
+
+CREATE TABLE moty_app (
+	AppID INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	AppName CHAR(40) NOT NULL,
+	AppType INT UNSIGNED NOT NULL
+);
+
+CREATE TABLE moty_activate_app (
+	ActivateAppID INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	MaestroID INT UNSIGNED NOT NULL,
+	AppID INT UNSIGNED NOT NULL,
+
+	FOREIGN KEY (MaestroID) REFERENCES moty_maestro(MaestroID),
+	FOREIGN KEY (AppID) REFERENCES moty_app(AppID)
+);
+
+
+
+CREATE TABLE moty_best_record (
+	BestRecordID INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	MaestroID INT UNSIGNED NOT NULL,
+	AppID INT UNSIGNED NOT NULL,
+	UserID INT UNSIGNED NOT NULL,
+	BestRecord FLOAT NOT NULL,
+	RecordDateTime DATETIME NOT NULL,
+
+	FOREIGN KEY (MaestroID) REFERENCES moty_maestro(MaestroID),
+	FOREIGN KEY (AppID) REFERENCES moty_app(AppID),
+	FOREIGN KEY (UserID) REFERENCES moty_user(UserID)
+);
+
+CREATE TABLE moty_ranking (
+	RankingID INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	MaestroID INT UNSIGNED NOT NULL,
+	AppID INT UNSIGNED NOT NULL,
+	RankingType INT UNSIGNED NOT NULL,
+	Rank INT UNSIGNED NOT NULL,
+	UserID INT UNSIGNED NOT NULL,
+
+	FOREIGN KEY (MaestroID) REFERENCES moty_maestro(MaestroID),
+	FOREIGN KEY (AppID) REFERENCES moty_app(AppID),
+	FOREIGN KEY (UserID) REFERENCES moty_user(UserID)
+);