What term describes the structural design of a database?

The term that describes the structural design of a database is "schema." A database schema outlines how data is organized, including the tables, fields, relationships, and constraints in the database. It acts as a blueprint for the database, helping to ensure that data is stored in an organized manner while also defining how the various elements interact with one another.

In contrast, a table is a collection of related data entries consisting of rows and columns, but it does not represent the full structural design of the database. A query is a request for data or information from a database, typically written in a specific programming language like SQL, and does not describe the structure. An index is a database object that improves the speed of data retrieval operations but does not define how data is structured or organized within the database. Therefore, schema is the most accurate term for describing the overarching organization of a database.