How to use Checkpoints in QTP ?

Answer

A checkpoint is a verification point that compares the current value with the expected value for specified properties of an Object. If they current and expected value match it generates a PASS status otherwise FAIL status}

There are many types of checkpoints detialed below

1. Standard checkpoints: It compares the expected values of object properties captured during recording to the object's current values during a run session
2. Page Checkpoint : A Standard Checkpoint created for a web page can be called a Page Checkpoint.  It is used to check total number of links & images on a web page. Page Checkpoints can be used to check Load Time i.e. time taken to load a web page.
3. Bitmap Checkpoint helps a user in checking the bitmap of an image or a full web page. It does a pixel by pixel comparison between actual and expected images.
4. Image Checkpoint enable you to check properties like source file location of a web image. Unlike , Bitmap Checkpoint  you can not check pixels(bitmaps) using image checkpoint.
5. Text Checkpoint is Used to check expected text in a web-page or application. This text could be from a specific region of the application or a small portion of text displayed
6. Accessibility Checkpoints verifies compliance with World Wide Web Consortium (W3C)  instructions and guidelines for Web-based technology and information systems. These Guidelines make it easy for disabled to access the web.
7. Database Checkpoints create  a query  during record time and database values are stored as expected values. Same query is executed during run time and actual & expected values are compared.
8. In Table Checkpoint , you dynamically can check the contents of cells of a table (grid) appearing in your environment. You can also check various table properties like row height , cell width and so on. Table Checkpoint is similar to Database Checkpoint
9. Using XML Checkpoints you can verify XML Data ,XML Schema,   XML Data