Update README.md

@@ -6,11 +6,9 @@
 > CREATE TABLE USER(
 > ID int(10) NOT NULL AUTO_INCREMENT PRIMARY KEY,
 > EMAIL varchar(64) NOT NULL UNIQUE,
-> NAME varchar(64) NOT NULL,
 > NICKNAME varchar(32) UNIQUE,
 > AGE int(16),
-> GENDER varchar(32),
-> PICTURE varchar(128) NOT NULL
+> GENDER varchar(32)
 > );
 > </code>
 
@@ -29,6 +27,20 @@
 
 </pre>
 
+> <pre><code>
+> CREATE TABLE PREFERENCE(
+> ID int(10) NOT NULL AUTO_INCREMENT PRIMARY KEY,
+> NICKNAME varchar(32) NOT NULL  UNIQUE, 
+> PRICE int(10) NOT NULL,
+> KINDNESS int(10) NOT NULL,
+> NOISE int(10) NOT NULL,
+> ACCESSIBILITY int(10) NOT NULL
+> FOREIGN KEY(NICKNAME) REFERENCES USER(NICKNAME) ON DELETE CASCADE
+> );
+> </code>
+
+</pre>
+
 ###commit 형식
 
 <pre><code>