Which of the following best describes structured data?

Structured data is characterized by its organization and easily addressable format, which facilitates efficient analysis. This type of data typically adheres to a predefined schema, consisting of specific fields and types, allowing it to be easily stored in relational databases. The structure allows for straightforward querying and data retrieval using languages such as SQL.

For instance, data found in spreadsheets or relational database tables, where each data point is organized into rows and columns, exemplifies structured data. The organization enables users and systems to sort, filter, and analyze data effectively.

Other answer choices highlight different aspects of data handling. Unorganized data (A), non-relational databases (B), and data storage techniques (D) do not encapsulate the essence of structured data, which specifically emphasizes the organized and addressable nature necessary for efficient data analysis.