Explain valid and invalid in rails?

877

What is difference between sqldatareader and sqldataadapter?

974

Define co-ordination covalent bond?

1140

What type of data hadoop can handle ?

472

what is the difference between preemptive scheduling and time slicing? : Java thread

1094

How you can find a file using terminal?

980

How does the generational garbage collector in the .net clr manage object lifetime? What is non-deterministic finalization?

1041

We did promotion activity for X co that co is our client ( S Dr) which we sold tickets through our vendor through out north india ... But those vendors adjusted cash with thir bill and remaining balance we received ,, Ticket amount we paid from our co Bank A/c to our client (S Dr) .the amount is too huge so how can i sort out this in books of acconts ..............

2019

What is binding and how many types of bindings are there in wcf?

937

What is the purpose of static keyword in java?

1009

How do I seed my database for column that is a foreign key referencing to other table?

719

Explain about high speed packet access?

843

What is caching? What are different ways of caching in asp.net?

1388

What is regression in excel?

639

Explain how are fossils formed?

817