diff --git a/.idea/artifacts/gdms_Web_exploded.xml b/.idea/artifacts/gdms_Web_exploded.xml
deleted file mode 100644
index 00e9edf..0000000
--- a/.idea/artifacts/gdms_Web_exploded.xml
+++ /dev/null
@@ -1,16 +0,0 @@
-<component name="ArtifactManager">
-  <artifact type="exploded-war" name="gdms:Web exploded">
-    <output-path>$PROJECT_DIR$/out/artifacts/gdms_Web_exploded</output-path>
-    <root id="root">
-      <element id="javaee-facet-resources" facet="gdms/web/Web" />
-      <element id="directory" name="WEB-INF">
-        <element id="directory" name="classes">
-          <element id="module-output" name="gdms" />
-        </element>
-        <element id="directory" name="lib">
-          <element id="file-copy" path="C:/Program Files/Apache Software Foundation/Tomcat 9.0/lib/tomcat-jdbc.jar" />
-        </element>
-      </element>
-    </root>
-  </artifact>
-</component>
\ No newline at end of file
diff --git a/src/core/operation/Delete.java b/src/core/operation/Delete.java
index f9e7acd..678aeaf 100644
--- a/src/core/operation/Delete.java
+++ b/src/core/operation/Delete.java
@@ -12,9 +12,7 @@ public class Delete extends Operation {
     public Map<String, Object> execute(User subject) throws GExcptSQL {
         Map<String, String> map = new HashMap<>();
         map.put("id",(String)this.getOptions().get("id"));
-        for(String table:DBManagement.graduationDesignTables){
-            DBManagement.delete(table,map);
-        }
+        //todo
         return this.getOptions();
     }
 }
diff --git a/src/core/operation/Select.java b/src/core/operation/Select.java
index 9d09797..7b5b6ab 100644
--- a/src/core/operation/Select.java
+++ b/src/core/operation/Select.java
@@ -12,17 +12,15 @@ public class Select extends Operation {
     @Override
     public Map<String, Object> execute(User subject) throws GExcptSQL {
         Map<String, String> vMap = new HashMap<>();
+        Map<String, String> limits = new HashMap<>();
         String id = (String)this.getOptions().get("student_id");
         String teacher_id = (String)this.getOptions().get("teacher_id");
-        vMap.put("id",id);
+        limits.put("id",id);
         vMap.put("student_id",id);
         vMap.put("teacher_id",teacher_id);
-        DBManagement.insert("graduation_design", vMap);
+        DBManagement.update("graduation_design", vMap,limits);
         vMap.remove("student_id");
         vMap.remove("teacher_id");
-        for(int i=1;i<DBManagement.graduationDesignTables.length;i++){
-            DBManagement.insert(DBManagement.graduationDesignTables[i],vMap);
-        }
         return this.getOptions();
     }
 }
diff --git a/src/core/user/utils/AccountManagement.java b/src/core/user/utils/AccountManagement.java
index 223b3dc..6ab154b 100644
--- a/src/core/user/utils/AccountManagement.java
+++ b/src/core/user/utils/AccountManagement.java
@@ -53,7 +53,7 @@ public interface AccountManagement {
 
         User user =  createUser(userType, vMap);
         if(userType=="student"){
-            //initAllStatus((Student) user);
+            initAllStatus(user.getId());
         }
         return  user;
     }
@@ -70,9 +70,12 @@ public interface AccountManagement {
         return user;
     }
     String defaultStatus = "1";
-    static void initAllStatus(String id){
+    static void initAllStatus(String id) throws GExcptSQL {
         for(Map.Entry<String,String> entry:DBManagement.allStatus.entrySet()){
-
+            Map<String,String> vMap = new HashMap<>();
+            vMap.put("id",id);
+            vMap.put(entry.getValue(),defaultStatus);
+            DBManagement.insert(entry.getKey(),vMap);
         }
     }
 }