Which is an advantage of data modelling?

• A. Increases data redundancy
• B. Enables data visualization
• C. Automates payroll
• D. Foundation for handling data

Answer: (D)

Data modelling provides a structured blueprint for how information will be stored, accessed, and managed, which is the foundation for handling data. By defining entities, attributes, relationships, keys, and rules, it creates a consistent framework that data systems can follow. This helps ensure data is stored in a uniform way, can be integrated across sources, and supports reliable retrieval and governance. With a solid model in place, downstream tasks like reporting, analytics, and system maintenance become smoother and more scalable.

Other options aren’t as strong: increasing data redundancy is generally avoided by modelling through normalization; data visualization and payroll automation are outcomes or applications that depend on having well-structured data, not direct advantages of modelling itself.