What does Structured Analysis focus on?

Structured Analysis is a classical software-engineering technique used during the requirements and system-analysis stage of the SDLC. It models what a system must do by decomposing it into interconnected processes and specifying how data flows into, through, and out of each process, using tools such as data flow diagrams (DFDs), a data dictionary, and process specifications, deliberately independent of any hardware platform, database technology, or screen design.

Applying this to the four choices here: only the modeling of data flow and processes is what Structured Analysis's own artifacts (DFDs and process specifications) actually produce. Choosing hardware, a database platform, or a user interface belongs to later or separate SDLC activities, not to this analysis technique itself.

• Hardware components: a technology and infrastructure-selection decision (servers, storage, network equipment) made during platform planning, not something an analysis technique documents.

• Database management: an operations and administration concern (backup, security, storage tuning) handled by database administrators after a system is built, not an analysis-phase modeling activity.

• User interfaces: a presentation and design-phase concern (screen layout, menus, interaction) addressed once the logical model from analysis already exists.

So among the four, only the option naming data flow and processes matches what this technique is defined to focus on.