After updating any value in a specific view, does MySQL update the same value in the base table and its associated views (if any)?

Yes, MySQL will update the value, if it is updated in a view, in the base table as well as in its associated views. To illustrate it we are taking the example of table Student_info having the following data −

mysql> Select * from student_info;
+------+---------+------------+------------+
| id   | Name    | Address    | Subject    |
+------+---------+------------+------------+
| 101  | YashPal | Amritsar   | History    |
| 105  | Gaurav  | Chandigarh | Literature |
| 125  | Raman   | Shimla     | Computers  |
| NULL | Ram     | Jhansi     | Computers  |
+------+---------+------------+------------+
4 rows in set (0.00 sec)

The following is the view 'Info' created based on the table 'Student_info'

mysql> Select * from Info;
+------+---------+------------+
| Id   | Name    | Subject    |
+------+---------+------------+
| 101  | YashPal | History    |
| 105  | Gaurav  | Literature |
| 125  | Raman   | Computers  |
| NULL | Ram     | Computers  |
+------+---------+------------+
4 rows in set (0.00 sec)

Now in the following query we will update the view 'Info' −

mysql> Update info set id = 130 where Name = 'Ram';
Query OK, 1 row affected (0.88 sec)

mysql> Select * from Info;
+------+---------+------------+
| Id   | Name    | Subject    |
+------+---------+------------+
| 101  | YashPal | History    |
| 105  | Gaurav  | Literature |
| 125  | Raman   | Computers  |
| 130  | Ram     | Computers  |
+------+---------+------------+
4 rows in set (0.00 sec)

The above result set shows that view 'Info' has been updated.

mysql> Select * from student_info;
+------+---------+------------+------------+
| id   | Name    | Address    | Subject    |
+------+---------+------------+------------+
| 101  | YashPal | Amritsar   | History    |
| 105  | Gaurav  | Chandigarh | Literature |
| 125  | Raman   | Shimla     | Computers  |
| 130  | Ram     | Jhansi     | Computers  |
+------+---------+------------+------------+
4 rows in set (0.00 sec)

The above result set shows that when we update the view named 'info', the base table is also updated.

The following is a view named 'info_less' created based on the view 'info'. When we update the view 'info', it will also be updated.

mysql> Select * from info_less;
+------+-------+-----------+
| Id   | Name  | Subject   |
+------+-------+-----------+
| 125  | Raman | Computers |
| 130  | Ram   | Computers |
+------+-------+-----------+
2 rows in set (0.00 sec)

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