Answer:
<!-- Modified by selena ramirez - for html compliance -->
Explanation:
In HTML, <!-- .. --> tag is used to insert comments in the webpage code.
Comments written inside the tag is visible only on the code, and is not displayed in the browsers when the page is requested by the client computer.
<em>Comment tag</em> is useful when there is a lot of code and multiple developers are dealing with the same code.
Comments help developers understand what changed is made and why.
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;
The complete program is to define a boolean method that returns true if all elements of an array are negative, or return false, if otherwise
The method in java, where comments are used to explain each line is as follows:
//This defines the method
public static boolean chkNegative (double[] myArr) {
//This initializes a boolean variable
boolean isNeg = true;
//This iterates through the array
for (int i = 0; i < myArr.length; i++) {
//If the array element is 0 or positive
if (myArr[i] >= 0) {
//Then the boolean variable is set to false
isNeg = false;
//And the loop is exited
break;
}
}
//This returns true or false
return isNeg;
}
Read more about boolean methods at:
brainly.com/question/18318709
Answer:
user_name = input("input user name: ")
print(len(user_name))
Explanation:
input - input function in python
len - length of value
print - print data
