Software test phases are not restricted to a particular phase of the software development solutions cycle. They are not restricted to one type of property to be tested. The ISTQB identifies four levels of test component, integration (formerly test technical integration), system test (functional test) and acceptance Test or UAT.
Level tests: a group of test activities that are organized and managed together. Level tests are related responsibilities in a project. Test levels are component testing, integration testing, system testing and acceptance.
The test plan and evaluation is the document containing all the tests and the testing strategy described by describing the tests in their entirety: place in the process product, test environment, test types and more.
The test sheets are documents attached to the test plan, each record corresponds to a coherent set of component test plan. They can be based on a functional breakdown or possibly other criteria.