Information systems examples: an online hotel reservation application with robust database capabilities is a good example of which concept?

Introduction / Context:
Online reservation platforms store, query, and update large volumes of structured data in real time: room inventory, rates, bookings, and customer profiles. The enabling core is a database engine and its data model, accessed by the application tier.

Given Data / Assumptions:

• The application supports real-time searches, availability checks, and bookings.
• It relies on persistent storage, indexing, and transactions.
• We are to identify the core technological concept demonstrated.

Concept / Approach:
Such systems showcase a DBMS in action. While the application is not itself the DBMS, the example most directly illustrates the use of a DBMS (schemas, queries, transactions, concurrency control) to power a mission-critical, data-driven application. “Manual information system” is the opposite of automated. “Marketing information system” and “managerial information system” are broader organizational constructs not specific to reservation transaction processing.

Step-by-Step Solution:

Verification / Alternative check:
Architecture diagrams for reservation systems show application servers backed by a relational (or NoSQL) DBMS for bookings, pricing, and availability.

Why Other Options Are Wrong:
Marketing/managerial information systems are higher-level constructs; the question spotlights database capability within an operational application.

Common Pitfalls:
Conflating the application with the DBMS layer; forgetting that transactional integrity is crucial (double-booking must be prevented).

Final Answer:
database management system (DBMS)