This is a multiple user testing to access the application at the same time to verify effect on code, module or DB. mainly used to identify locking and deadlocking situations in the code.
How many users should we include in testing?
Where can my testing take place?
What if my product/site isn�t built yet?
When should I do usability testing?
What is usability testing?
How will you call from one action to another action ?
How to Reduce the Cost of Software Testing
What is Performance Testing?
What's the difference between load and stress testing ?