The first one, "was revealed" makes it passive,
well for me it looks like a paragraph but since you say it's a sentence it's information and it's telling real facts I guess most of informational text have sentences mostly
Answer:
Phases of the system development life cycle
When talking about an information system, we must recognize that it includes both hardware and software configurations, which is why the SDLC encompasses these two components and usually covers these 7 phases: planning, analysis, design, development, testing and integration, implementation, and maintenance.
Explanation:
