Can we encode mathematics using XML?

506

For a webbased application:- what should be code in expert veiw, for retrieving a single column name "username" from a server and checking whether exported "username" from datatable doesn't exist in server. suppose i have saved in excelsheet a username="gayatri" , which is exported, then checked for whether this username "gayatri" exist in server database or not ? if exist then allow to enter new username, which should be again checked for in loop , or else come out of loop and enter a distinct "username". plz let me have this answer in my id gayatrisahooin@hotmail.com

1747

Which one is trusted and which one is untrusted?

508

Tell me The reason for choosing the department I have chosen to work in?

672

What is doctype used for in html?

458

Can a class have multiple constructors c#?

494

What is the use of concat() in mysql?

507

How arraylist increase its size?

459

Explain Task Perform in Workflow?

192

What is SET ?

1515

What is difference between header and footer?

306

What is non-valuated material?

689

How many dimensions can be used in bar chart?

3

Explain what is an application domain?

530

What is the meaning of ?

478