What are the rules to define a variable name in r programming language?

84

What is Private Constructor? and it’s use? Can you create instance of a class which has Private Constructor?

1036

How do you create a custom action for an item in a list?

761

How many joins can you have in sql?

988

Explain how long are locks retained within the repeatable_read and serializable isolation levels, during a read operation with row-level locking?

1222

why we use connect-soap and can we use it to connect external database

577

Explain the difference between $(this) and 'this' in jquery?

884

How do you run a query in pgadmin 3?

795

What do you mean by multithreaded program?

1064

How often can a female rat reproduce?

1078

What happens if one hadoop client renames a file or a directory containing this file while another client is still writing into it?

482

Explain the document currency (wrbtr) and local currency fields (debt) when posting a document in sap fi?

1517

What is SQL metal in LINQ?

132

What is octane number and cetane number?

1141

What is a webservice and what is the underlying protocol used in it?

705