Why there is a need to use primary key in database, Why there is a need to ...

Why there is a need to use primary key in database ? Primary key is a constraint basically used in datdabase to uniquely identify the records in the database.

Difference between other regular methods and constructors,

Authentication -security component, Authentication is basically an identifi...

Authentication is basically an identification step. Functionality used for J2EE security: Principal : An entity that may be authenticated and identified. Principal n

Explain the term event handler, Explain the term Event Handler? An even...

Explain the term Event Handler? An event handler is a command that calls a function while an event happens, like as the user clicking a button.

How can we define a pixel, How can we define a Pixel? It is the smallest ...

How can we define a Pixel? It is the smallest number of element of image that is spread along with regular array on display and each constituent consist of particular color.

Write a program on clearing rectangles, Write a program on clearing Rectang...

Write a program on clearing Rectangles ? It is also potential to clear a rectangle that you've drawn. The syntax is exactly what you'd expect: public abstract void clearRect

Loan prediction using machine learning algorithm, which algorithm are best?...

which algorithm are best?

Student, need help in assignment

need help in assignment

In javascript what is event handling and inline event, In JavaScript, what ...

In JavaScript, what is event handling? What are the two categories of events? In java script we could capture events on do a few operation on the basis of which particular even

Binary search tree, coording for BST

coording for BST