What tasks do checkpoints perform in QTP?

Checkpoints in QTP are used to verify information which is expected to be displayed when running test. Following are 8 types of available checkpoints:

a.) Page - checks application characteristics

b.) Text - verifies that text strings are displayed at proper locations in the application

c.) Object - checks values of application objects

d.) Image - checks values of application images

e.) Table - verifies information in an application table

f.) Accessibility - checks web page for compliance with Section 508

g.) XML - verifies contents of XML data files or documents that are part of the application

h.) Database - verifies contents of databases accessed by the website