I believe the answer is B<span />
Answer:to add a column to existing table.
to rename any existing column.
to change datatype of any column or to modify its size.
to drop a column from the table.
Explanation:
hope this help
Explanation:
The special case that exists in linked list when we are managing them is when we are dealing with the first element of the list.
When we create a linked list we create a first node separately.
If we delete or add element in front of the first element we have to carefully handle that case.
Hence the special case is when we are dealing with the first element of the list.
There is no "best" programming language. Each programming language has it's one purpose. HTML is used for the skeleton of the web page. CSS is used to style the HTML. Javascript and javascript libraries like jQuery are used to make a web page more interactive. PHP is used to make a web page dynamic. MYSQL used to manage databases. Not all languages are for strictly for web page development. Ruby is an example. But Ruby on Rails is for web development. Some languages are used for making programs. Such as C, C++, C#. There are all sorts of programming languages. Some more popular than others. I have learned multiple programming languages and I have my favorites. If you go to learn multiple languages, I am pretty sure you're gonna have a favorite.
It basically comes down to what programming language you want to learn.
Answer:
Person p1, p2, p3;
int m1, m2, m3;
p1 = new Person();
// assignment 1
m1 = p1.getMoney();
p2 = new Student();
// assignment 2
m2 = p2.getMoney();
p3 = new Employee();
// assignment 3
m3 = p3.getMoney();
//////////////////////////////////////////////////////////////////////////////////////////////
The reference to getMoney in assignment 3 is to the <em>Person</em> class.
Explanation:
Since Employee class didn't override Person class's getMoney() method, calling p3 with getMoney() will call Base class's (Person) getMoney() method.