Boundary Value Analysis is one of technique which is used in Black Box Testing. In this technique we are analyzing the data that which type of data we shall use in test inputs? Actually when we test any application which have some fields and required test inputs then we analyze the data values like which type of data it will accept and how many data and how long? We can say that Boundary Value Analysis is data selection technique includes maximum value, minimum value, error value, abnormal values and assume that when application work with these different types data then it will work all type of data in between. Assume that you have one text field which is accept only 1 to 10 number then we can test this text field with these data 0.1, -1, 11, 10.0, and some character. Please let me know if I’m wrong.