Software testing terminology: In systems development, what does “sequential (series) testing” most accurately refer to?

Introduction / Context:
Testing terms are often confused: unit, integration, system, acceptance, regression, and special methods like parallel or pilot runs. “Sequential” (or “series”) testing refers to executing a sequence of representative transactions and verifying outputs match specifications at each step, helping validate end-to-end logic across program modules.

Given Data / Assumptions:

• We are not describing user acceptance with live production data.
• We are not merely desk-checking code logic without execution.
• We are not focusing narrowly on regression of code changes.

Concept / Approach:
Sequential (series) testing follows predefined test cases through the system in the intended processing order, confirming that each program properly transforms inputs to outputs per the specification. It validates inter-program handoffs, file updates, and report totals using controlled, known data sets. This sits between pure unit tests and full-scale pilot/parallel runs, emphasizing correctness of specified transaction flows.

Step-by-Step Solution:

Verification / Alternative check:
Classic SDLC texts place series/sequential testing as executing controlled test transactions through the full chain to confirm conformance before user acceptance or production conversion.

Why Other Options Are Wrong:

• Running with live data by actual user: That is user acceptance or pilot operation.
• Checking the logic of programs: Desk checking or code review, not execution-based validation.
• Testing changes: Regression testing focuses on change impact, not sequential flow per se.

Common Pitfalls:
Skipping controlled test data; relying solely on user acceptance; failing to verify inter-program file handoffs and cumulative totals.

Final Answer:
making sure that the new programs do in fact process certain transactions according to specifications