How to keep file validation in apache-wicket if no file has been selected?

1

what is the different between a servlet and a cgi? Why do you go for servlet rather than cgi?

47

Why instance based learning algorithm sometimes referred as Lazy learning?

5

Can I learn javascript without html?

14

What are the predefined tablespaces in a database?

30

Do you hav reference list?

1724

What is the difference between ngoninit and ngafterviewinit?

7

How can you Hide system ribbon buttons?

1

What is the fundamental difference between a block chart and a mekko chart?

1

What is cardiac output?

50

What is rownum and rowid?

2

Is profiler the only tool that has the ability to audit and identify ddl events? : sql server security

46

What is a request for quotation (rfq)? : fi- accounts payable

46

Which of these metrics is especially important to clients who are running a branding campaign?

1

Explain about recreational function of Science

34