Role of Tester in SDLC cycle
1. Requirement stage - PM,Tech.Lead, Testlead will review the document
2. Design Stage - PM or Test lease will review the document
3. Coding Stage - Testlead will prepare Testplan, Tester will prepare testcases
4. Testing Stage - Tester will execute the test

SDLC (Software Development Life cycle)
1. Requirement
2. Design
3. Coding
4. Testing
5. Implement
6. Maintainance


STLC (Software Testing Life cycle)
1. Test Plan Preparation: Defines overall testing approach based on Project Summary Document and SRS document.
2. Test Case Design: Defines what is to be tested and describes the expected results.
3. Test Execution: Execute the test cases as per Manual or Automation based on client requirement and software stability.
4. Test Log Preparation: Defines the pass and Fail information
5. Defect Reporting: Log the Bug in Bug Tracker like Bugzilla and PVCS Tracker.
6. Defect Tracking : Monitor the Bug Status.

Recovery testing - testing how well a system recovers from crashes, hardware failures, or other catastrophic problems.

Realization testing is possible in each and every phase mentioned below:(Either it may be verification or validation)

• programming or coding the software
• customizing and configuring the package or the programs
• writing the documentations
• performing the internal tests

Realization includes all the internal activities of the QA and Development team before the final product can be delivered to the end-user or to the customer.

VERIFICATION: THE VERIFY THE PROCESS LIKE SET OF DOCUMENTS,PLANS,SPECIFICATIONS AND REQUIREMENTS.

VALIDATION: THE ACTUAL TESTING OF AN ACTUAL PRODUCT.

Verification all the documents produced during development, and on plans.
i/p for verification:
1 Checklists
2. Issue lists
3.Walk throughs
4. Inspections
5. Reviews and Meetings

Validation is actual testing
i/p for validation:
1. Test Cases based on user requirements.
2. Test Data etc.

Testing is Quality Control
Quality Control-Measure the Quality Of Products
Detection action
Quality Assurance-Measure the Quality of Process.
Prevention action


Quality Control (Testing) : A process of executing the system intending to find defects.

Quality Assurance:A set of activities that are adequate to ensure that system meets its objectives

Performance Testing:

• In performance testing we test the Responce time, efficiency and processing speed.
• To test the complaince of the system.
  

Example - If u open any website in the Url window the opening of the home page is called as
performance testing.

Load Testing:

• Increasing the number of users at a specific interval of time. Load testing is a combination of capacity testing and longetivity testing.
• Load testing Innitially we will start test with single user and based on the transaction
  time we will increase the user one by one.
  

Example - IF 5 users are using the login page of yahoo mail at the same time the performance
is constant. If 10 users are add by the user at the same time . the performance is constant.
At last In If the users add 20 user at the same time the performance should decreased.

Stress Testing:

• Testing is done with max no of users in low disk space, low memory and low configuration.
• The execution of our application build under customer expected configuration and various
  load levels from high level to low level and low level to high level to estimate load
  balancing is called stress testing.

Example: An users are added to with in the specification of the limit, and cannot be added
beyond that.

Volume Testing:

• To estimate the data base in terms of records.
• We are executing the test with diffrent volume of data (eg. Number of records).
  

Example: If 1 user is accessing how many records are retriving. if 2 users are accessiong how many records are retriving, etc....