Android SQLite Database holds a single table for a database

In my project 3 registration forms are there. i provided 3 separate db files and call them in respective registration files accordingly. I gave same database name in all db files and table name varied respective to the forms. The problem which am facing is database allows me to store a single form registration details only (i.e: if there is User and Doctor registration and i have same db name but table name different). Application allows to store either User or doctor registration. Help me asap!

User registration:

            if (username.trim().equals("")&& userage.trim().equals("") && usergender.trim().equals("") && userdob.trim().equals("") && useraddress.trim().equals("") && userpincode.trim().equals("") && userid.trim().equals("") && userpass.trim().equals(""))
            {
                Toast.makeText(getBaseContext(),"Fields should not empty",Toast.LENGTH_LONG).show();
       /*         UserName.setText("");
                UserAge.setText("");
                UserGender.setText("");
                Userdob.setText("");
                Useraddress.setText("");
                Userpincode.setText("");
                Userid.setText("");
                UserPass.setText("");  */
            }
            else
            {

                try {
                   DatabaseHandler3 db=new DatabaseHandler3(userregistration.this);
                    db.addContact(new Contact(username,userage,usergender,userdob,useraddress,userpincode,userid,userpass));
                    Toast.makeText(getBaseContext(),"Registration Success",Toast.LENGTH_LONG).show();
                    List<Contact> contacts=db.getAllContacts();
                    for(Contact cn:contacts){
                        String log=cn.getNAME()+"\n"+cn.getAGE()+"\n"+cn.getGENDER()+"\n"+cn.getDOB()+"\n"+cn.getADDRESS()+"\n"+cn.getPINCODE();
                        Toast.makeText(userregistration.this,log,Toast.LENGTH_LONG).show();
                    }


                } catch (Exception e) {
                    e.printStackTrace();
                }

            //    msq.putinformation(msq,username,userage,usergender,userdob,useraddress,userpincode,userid,userpass);


                finish();
            }
        }
    })   ;


}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_userregistration, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

}

Database Handler3 - Userdb:

// All Static variables
// Database Version
private static final int DATABASE_VERSION = 1;

// Database Name
private static final String DATABASE_NAME = "DOCROID";

// Contacts table name
private static final String TABLE_CONTACTS = "UserRegistration";




// Contacts Table Columns names
private static final String KEY_NAME = "name";
private static final String KEY_AGE = "age";
private static final String KEY_GENDER = "gender";
private static final String KEY_DOB = "dob";
private static final String KEY_ADDRESS = "address";
private static final String KEY_PINCODE = "pincode";
private static final String KEY_PH_NO = "phone";
private static final String KEY_PASSWORD = "password";



private static final String LOGCAT = null;

private static Context context;

 public DatabaseHandler3(Context context) {
     super(context,"/sdcard/DOCROID/"+DATABASE_NAME, null, DATABASE_VERSION);
        // TODO Auto-generated constructor stub
    }


@Override
public void onCreate(SQLiteDatabase db) {
    // TODO Auto-generated method stub

    String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_CONTACTS + "("
            + KEY_NAME + " TEXT," + KEY_AGE + " TEXT,"
            + KEY_GENDER + " TEXT," + KEY_DOB + " TEXT,"
            + KEY_ADDRESS + " TEXT," + KEY_PINCODE + " TEXT,"
            + KEY_PH_NO + " TEXT," + KEY_PASSWORD + " TEXT" + ");";
    db.execSQL(CREATE_CONTACTS_TABLE);



}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
    // TODO Auto-generated method stub

}

public void addContact(Contact contact) {
     SQLiteDatabase db = this.getWritableDatabase();

        ContentValues values = new ContentValues();
        values.put(KEY_NAME, contact.getNAME()); // Contact Name
        values.put(KEY_AGE, contact.getAGE());
        values.put(KEY_GENDER, contact.getGENDER()); // Contact Phone Number
        values.put(KEY_DOB, contact.getDOB()); // Contact Name
        values.put(KEY_ADDRESS, contact.getADDRESS());
        values.put(KEY_PINCODE, contact.getPINCODE());
        values.put(KEY_PH_NO, contact.getPHONE()); // Contact Name
        values.put(KEY_PASSWORD, contact.getPASSWORD());


        // Inserting Row
        db.insert(TABLE_CONTACTS, null, values);
        db.close();

}
 public List<Contact> getAllContacts() {
        List<Contact> contactList = new ArrayList<Contact>();
        // Select All Query
        String selectQuery = "SELECT  * FROM " + TABLE_CONTACTS;

        SQLiteDatabase db = this.getWritableDatabase();
        Cursor cursor = db.rawQuery(selectQuery, null);

        // looping through all rows and adding to list
        if (cursor.moveToFirst()) {
            do {
                Contact contact = new Contact();
                contact.setNAME(cursor.getString(0));
                contact.setAGE(cursor.getString(1));
                contact.setGENDER(cursor.getString(2));
                contact.setDOB(cursor.getString(3));
                contact.setADDRESS(cursor.getString(4));
                contact.setPINCODE(cursor.getString(5));
                contact.setPHONE(cursor.getString(6));
                contact.setPASSWORD(cursor.getString(7));

                // Adding contact to list
                contactList.add(contact);
            } while (cursor.moveToNext());
        }

        return contactList;


           String selectQuery = "DELETE FROM " + TABLE_CONTACTS;
            db.execSQL(selectQuery);

    }

Doctor Registration:

            if (docname.trim().equals("") && docage.trim().equals("") && docgender.trim().equals("") && docdob.trim().equals("") && docarea.trim().equals("") && docaddress.trim().equals("") && docpincode.trim().equals("") && docid.trim().equals("") && docpass.trim().equals("")) {
                Toast.makeText(getBaseContext(), "Fields should not empty", Toast.LENGTH_LONG).show();
             /*   Doc_name.setText("");
                Doc_age.setText("");
                Doc_gender.setText("");
                Doc_dob.setText("");
                Doc_area.setText("");
                Doc_address.setText("");
                Doc_pincode.setText("");
                Doc_id.setText("");
                Doc_pass.setText(""); */
            } else {

                try {
                    DatabaseHandler4 db1 = new DatabaseHandler4(docregistration.this);
                    db1.addContact(new Contact1(docname, docage, docgender, docdob, docarea, docaddress, docpincode, docid, docpass));
                    Toast.makeText(getBaseContext(), "Registration Success", Toast.LENGTH_LONG).show();
                    List<Contact1> contacts = db1.getAllContacts();
                    for (Contact1 cn : contacts) {
                        String log = cn.getDNAME() + "\n" + cn.getDAGE() + "\n" + cn.getDGENDER() + "\n" + cn.getDDOB() + "\n" + cn.getDAREA() + "\n" + cn.getDADDRESS() + "\n" + cn.getDPINCODE();
                        Toast.makeText(docregistration.this, log, Toast.LENGTH_LONG).show();

                    }


                } catch (Exception e) {
                    e.printStackTrace();
                }

                finish();

            }

DatabaseHandler4 - doctor db:

// Database Name
private static final String DATABASE_NAME = "DOCROID";

// Contacts table name
private static final String TABLE_CONTACTS1 = "docregistration";

// Contacts Table Columns names
private static final String KEY_DNAME = "name";
private static final String KEY_DAGE = "age";
private static final String KEY_DGENDER = "gender";
private static final String KEY_DDOB = "dob";
private static final String KEY_DAREA = "area";
private static final String KEY_DADDRESS = "address";
private static final String KEY_DPINCODE = "pincode";
private static final String KEY_DPH_NO = "phone";
private static final String KEY_DPASSWORD = "password";


private static final String LOGCAT = null;

private static Context context;

public DatabaseHandler4(Context context) {
    super(context,"/sdcard/DOCROID/"+DATABASE_NAME, null, DATABASE_VERSION);
    // TODO Auto-generated constructor stub
}


@Override
public void onCreate(SQLiteDatabase db1) {
    // TODO Auto-generated method stub

    String CREATE_CONTACTS_TABLE1 = "CREATE TABLE " + TABLE_CONTACTS1 + "("
            + KEY_DNAME + " TEXT," + KEY_DAGE + " TEXT,"
            + KEY_DGENDER + " TEXT," + KEY_DDOB + " TEXT,"
            + KEY_DAREA + " TEXT," + KEY_DADDRESS + " TEXT,"
            + KEY_DPINCODE + " TEXT,"
            + KEY_DPH_NO + " TEXT," + KEY_DPASSWORD + " TEXT" + ");";
    db1.execSQL(CREATE_CONTACTS_TABLE1);

}

@Override
public void onUpgrade(SQLiteDatabase db1, int oldVersion, int newVersion) {
    // TODO Auto-generated method stub

}

public void addContact(Contact1 contact) {
    SQLiteDatabase db1 = this.getWritableDatabase();

    ContentValues values = new ContentValues();
    values.put(KEY_DNAME, contact.getDNAME());
    values.put(KEY_DAGE, contact.getDAGE());
    values.put(KEY_DGENDER, contact.getDGENDER());
    values.put(KEY_DDOB, contact.getDDOB());
    values.put(KEY_DAREA, contact.getDAREA());
    values.put(KEY_DADDRESS, contact.getDADDRESS());
    values.put(KEY_DPINCODE, contact.getDPINCODE());
    values.put(KEY_DPH_NO, contact.getDPHONE());
    values.put(KEY_DPASSWORD, contact.getDPASSWORD());


    // Inserting Row
    db1.insert(TABLE_CONTACTS1, null, values);
    db1.close();

}
public List<Contact1> getAllContacts() {
    List<Contact1> contactList = new ArrayList<Contact1>();
    // Select All Query
    String selectQuery = "SELECT  * FROM " + TABLE_CONTACTS1;

    SQLiteDatabase db1 = this.getWritableDatabase();
    Cursor cursor = db1.rawQuery(selectQuery, null);

    // looping through all rows and adding to list
    if (cursor.moveToFirst()) {
        do {
            Contact1 contact = new Contact1();
            contact.setDNAME(cursor.getString(0));
            contact.setDAGE(cursor.getString(1));
            contact.setDGENDER(cursor.getString(2));
            contact.setDDOB(cursor.getString(3));
            contact.setDAREA(cursor.getString(4));
            contact.setDADDRESS(cursor.getString(5));
            contact.setDPINCODE(cursor.getString(6));
            contact.setDPHONE(cursor.getString(7));
            contact.setDPASSWORD(cursor.getString(8));

            // Adding contact to list
            contactList.add(contact);
        } while (cursor.moveToNext());
    }

    return contactList;
}