Which technology provides some structure for stored data and is accessed through online applications?

A database is a structured collection of data that is stored electronically and allows for efficient access, management, and retrieval through online applications. It provides a systematic way to organize data, making it easy to search for and manipulate information. Databases support various data types and enable users to perform queries using structured query language (SQL) or other programming languages, ensuring data integrity and optimized performance.

The structured nature of databases is a key characteristic that distinguishes them from other options. For instance, a data warehouse focuses on analytical processing and may involve a larger scope over historical data for business intelligence purposes rather than real-time transactions. A data lake, on the other hand, is designed to store unstructured and semi-structured data in large volumes but lacks the organization and structured access of a database. Lastly, a data archive typically refers to the storage of infrequently accessed data that is preserved for long-term retention, which does not prioritize accessibility or structure in the way that a database does.

In summary, a database provides the necessary structure for stored data and allows for easy access through online applications, making it the most suitable answer for the question posed.