Discussion
In a relational database, which of the following describes the structure of data ?
Answer: A
The structure of data is described by the Schema.
A database schema defines the tables, their columns and data types, keys and the relationships between tables: the logical design of the database, as distinct from the data in it at any moment.
A tuple is a single row of data, an index is a structure that speeds up searches, and a query is a request for data.
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