Answer:
numAccounts = SavingsAccount.numberOfAccounts
Explanation:
In object oriented programming, when you have created an object of class, you can create several instances (objects) from that class by referencing the className.classFeild. In this instance SavingsAccount is the class name and
numberOfAccounts is a feild (or data member). to create a new numAccount, we use the syntax as above in the answer
helps us for typing letters, numbers and symbols etc.
Answer:
The Update statement in the DML is used for changing existing data in a table.
Explanation:
Their are following Sql statement in the DML.
Insert
This SQL statement is used for inserting data into the table.
select
This SQL statement is used for retrieving data from database
update
This SQL statement is used for updating data in a table.
delete
This SQL statement is used for delete data from database .
The "UPDATE" SQL statement in DML is used for Modify the data in the existing table .
Following are the syntax of Update SQL query
Update tablename
set column1=value1,column2=value2............column N=valueN
Where condition;
Example :Suppose we have student table and (rollno,name,age and add) are the field for that table we have to change the address of rollno 105
Then we use update query like that
UPDATE STUDENT
SET add='kalam nagar'
where rollno=105;
