There are how many major inputs to physical database design?

Explanation

The question is asking about the number of major inputs specifically for physical database design. Physical database design focuses on how the data will be physically stored and organized on a storage device, considering factors such as storage capacity, performance requirements, and data access patterns.There are two main inputs that drive physical database design:Conceptual data model: This model describes the entities (data objects) and their relationships within the database system. It provides a high-level view of the data without considering the physical implementation details.Storage and performance requirements: This includes factors such as the expected amount of data, the types of queries that will be run against the database, and the desired performance characteristics (e.g., speed, reliability).While other factors may influence physical database design decisions (such as security or backup considerations), these two inputs are generally considered the most critical.