diff --git a/README.md b/README.md
index f374d58..a06427c 100644
--- a/README.md
+++ b/README.md
@@ -130,8 +130,8 @@
             </p>
             <ol>
                 <li><p>#73 - Upgrade 'spring-security-oauth2' version to '2.0.6.RELEASE' (current: 1.0.5.RELEASE)      [CREATED]</p></li>
-                <li><p>#74 - oauth mysql ddl add create_time,  default is now()      [CREATED]</p></li>
-                <li><p>#75 - Add user information API, for <code>spring-oauth-client</code> project use
+                <li><p><del>#74 - oauth mysql ddl add create_time,  default is now()  </del></p></li>
+                <li><p>#75 - Add user information API, for <a href="http://git.oschina.net/mkk/spring-oauth-client"><code>spring-oauth-client</code></a> project use
                     <pre>
                     URL: /unity/user_info
                     Login: Yes (ROLE_UNITY)
diff --git a/others/database/oauth.ddl b/others/database/oauth.ddl
index 7a379cb..5b83f63 100644
--- a/others/database/oauth.ddl
+++ b/others/database/oauth.ddl
@@ -14,13 +14,14 @@ create table oauth_client_details (
   access_token_validity INTEGER,
   refresh_token_validity INTEGER,
   additional_information VARCHAR(4096),
-  create_time datetime,
+  create_time timestamp default now(),
   archived tinyint(1) default '0',
   trusted tinyint(1) default '0'
 );
 
 Drop table  if exists oauth_client_token;
 create table oauth_client_token (
+  create_time timestamp default now(),
   token_id VARCHAR(256),
   token BLOB,
   authentication_id VARCHAR(256),
@@ -30,6 +31,7 @@ create table oauth_client_token (
 
 Drop table  if exists oauth_access_token;
 create table oauth_access_token (
+  create_time timestamp default now(),
   token_id VARCHAR(256),
   token BLOB,
   authentication_id VARCHAR(256),
@@ -41,6 +43,7 @@ create table oauth_access_token (
 
 Drop table  if exists oauth_refresh_token;
 create table oauth_refresh_token (
+  create_time timestamp default now(),
   token_id VARCHAR(256),
   token BLOB,
   authentication BLOB
@@ -48,7 +51,9 @@ create table oauth_refresh_token (
 
 Drop table  if exists oauth_code;
 create table oauth_code (
-  code VARCHAR(256), authentication BLOB
+  create_time timestamp default now(),
+  code VARCHAR(256),
+  authentication BLOB
 );