Three-Tiered Database Architecture — Enterprise (Data) Tier In a standard three-tier architecture (presentation, application, data), which function belongs to the Enterprise/Data tier?

Introduction:
Three-tier architectures separate concerns across presentation, application (business logic), and data (enterprise) tiers. This question checks whether you can correctly assign responsibilities to the data tier.

Given Data / Assumptions:

• Presentation/UI concerns: rendering, user input, and interaction patterns.
• Application/middleware concerns: business rules, orchestration, and services.
• Data tier concerns: persistence, storage, retrieval, and integrity.

Concept / Approach:
The Enterprise/Data tier is responsible for managing stored data, enforcing integrity, handling transactions, and exposing data operations to the application tier. It is not concerned with UI rendering or HTTP protocol processing; those belong to the presentation and application tiers respectively.

Step-by-Step Solution:
1) Map each option to a tier: UI to presentation, business logic to application, persistence to data.2) Identify the option that clearly describes data management responsibilities.3) Select “Managing the data” for the Enterprise/Data tier.

Verification / Alternative check:
Reference layered architectures: the data tier typically includes the DBMS, data services, backup/recovery mechanisms, and security at the persistence layer.

Why Other Options Are Wrong:

• Managing the user-system interface / Rendering UI components: Presentation tier responsibilities.
• Processing HTTP protocol / scripting tasks: Application tier or web server responsibilities, not data storage.

Common Pitfalls:
Blurring boundaries between tiers by pushing business or presentation logic into the database layer; while possible, it defeats the purpose of separation of concerns.

Final Answer:
Managing the data