Test Execution is the process of executing Test Plans and monitoring particular Test Case Executions results. Test Execution has the same structure as Test Plan. It consists of a Test Cases list, where everyone can monitor the current status of each Test Case Execution. It’s also possible to assign Test Executions to a concrete person.
While referring to a Test Case, Test Plan and Test Execution, make sure you properly defined their names:
TEST_CASES
TEST_PLANS
TEST_EXECUTIONS