Skip to main content

Verification & Validation..

By

VERIFICATION & VALIDATION

Verification is the process of confirming that software meets its specification. It involves reviews and meetings to evaluate documents, plans, code, requirements, and specifications. This can be done with checklists, issues lists, walkthroughs, and inspection meetings..

Validation is the process of confirming that it meets the user’s requirements. Validation typically involves actual testing and takes place after verifications are completed.

For Example: - The Hubble space telescope was launched into the orbit around the earth, and it uses the large mirror to magnify the objects. Extreme precision and accuracy was the major concern for the construction of the mirror, but actually testing the mirror was not feasible. Therefore, the only means to check it was to carefully measure all its attributes and compare the measurements with the specifications.

After the measurements, as soon as it was launched, the images it returned was out of focus. The reason for this was improper manufacturing of the mirror. This confirmed that the mirror met the specifications but not the requirements i.e. Verification was fine, but it was not validated. Therefore, the difference in Verification and Validation is:

Verification : Are we building the product right?
Validation : Are we building the right product?


Jaykrishna.y@gmail.com




Labels:

Comments

Post a Comment

Popular posts from this blog

Convert JSON to XML using QTP/UFT/VBScript

By
Sample Code : Dim strPage,strJSON,objIE strPage = "C:\Jay\JLoader.html" Set objIE = CreateObject("InternetExplorer.Application") objIE.Visible = True objIE.Navigate2 strPage While objIE.Busy : Wend strJSON = "{""FirstName"":""Jay"", ""LastName"":""Krishna""}" Set objWin = objIE.document.parentWindow objWin.execScript "var jsonStr2XML = function(strJSON) { return json2xml(JSON.parse(strJSON));};" Msgbox  oWin.jsonStr2XML(strJSON) objIE.Quit In Detail: Converting The most popular data interchange format JSON(JavaScript Object Notation) to XML using QTP/UFT. Parsing JSON in UFT could be a challenge so we will use JavaScript in UFT to make it perfect. SO We need :              Java Script API  - To Convert JSON to XML                         JavaScript Files :                         http://goessner.net/download/prj/jsonxml/j
Post a Comment
Read more

Read Outlook mail attachment and Body using Vb Script or QTP

By
Set olApp = CreateObject("Outlook.Application") Set olns = olApp.GetNameSpace("MAPI") Set ObjFolder = olns.GetDefaultFolder(6) j = 0 For each item1 in ObjFolder.Items        iattachCnt = item1.Attachments.Count     Print "Attachments Count: " & iattachCnt     For i = 1 to iattachCnt         Print "FileName :    " & item1.Attachments(i).FileName         Print "Display Name:   " & item1.Attachments(i).DisplayName         Print "Size: " & item1.Attachments(i).Size     Next     Print " Body : " & item1.body     Print "--------------------------------------Mail Num - " & j & " -----------------------------------------------"     j = j+1    Next
Post a Comment
Read more

Excel Sorting By Rows and Columns

By
Excel Sorting By Row: Const xlAscending = 1 Const xlNo = 2 Const xlSortRows = 2 Set objExcel = CreateObject(“Excel.Application”) objExcel.Visible = True Set objWorkbook = objExcel.Workbooks.Open(“C:\Jay\Docs1.xls”) Set objWorksheet = objWorkbook.Worksheets(1) objWorksheet.Cells(1,1).activate Set objRange = objExcel.ActiveCell.EntireRow objRange.Sort objRange, xlAscending, , , , , , xlNo, , , xlSortRows set objExcel=nothing Excel Sorting By Column : Const xlAscending = 1′represents the sorting type 1 for Ascending 2 for Desc Const xlYes = 1 Set objExcel = CreateObject(“Excel.Application”)’Create the excel object objExcel.Visible = True’Make excel visible Set objWorkbook = _ objExcel.Workbooks.Open(“C:\Jay\Docs1.xls”)’Open the document Set objWorksheet = objWorkbook.Worksheets(1)’select the sheet based on the index .. 1,2 ,3 … Set objRange = objWorksheet.UsedRange’which select the range of the cells has some data other than blank Set objRange2 = objExcel.Range
Post a Comment
Read more

How to Read or Select Context Menu or Right Click Menu using QTP.

By
Select The Item in Right Click Menu or Context Menu: Window("sampleWindow").WinMenu("MenuObjType:=1).Select"File;New" Here MenuObjtype can be 1 r 2 r 3 .......n Check wether the Item is Exist or Not: If Window("sampleWindow").WinMenu("MenuObjType:=1).GetItemProperty("1","Exist") Then   Msgbox"Exist" Else  Msgbox"Does Not Exist" End If                                         Or If Window("sampleWindow").WinMenu("MenuObjType:=1).GetItemProperty("File","Exist") Then   Msgbox"Exist" Else  Msgbox"Does Not Exist" End If Get the Items in Context Menu: For i = 1 to 10 Print  Window("sampleWindow").WinMenu("MenuObjType:=" & i).GetItemProperty("1","Label") Then Next
Post a Comment
Read more

How to Download a file using VbScript

By
Following is the code to download a file using Vbscript, without using QTP This code uses the HTMLDom and URLDownloadToFile method from urlmon API. Since VBScript does support calling Native API methods directly, here I am using  Excel macro to declare a function for the urlmon API and running the macro by Excel API from VBscript Step1: Create a new excel and open the visual basic editor, Insert Module and paste the following code the Module, save the excel file Private Declare Function URLDownloadToFile Lib “urlmon” Alias _                                            “URLDownloadToFileA” ( _                                            ByVal pCaller As Long, ByVal szURL As String, _                                            ByVal szFileName As String, _                                            ByVal dwReserved As Long, _                                            ByVal lpfnCB As Long) As Long Sub FileSave(strUrl, Des)     r = URLDownloadToFile(0, strUrl, Des, 0, a)
Post a Comment
Read more