What maintains information about various objects, events, and people?

The correct choice is a database because it is specifically designed to store, manage, and retrieve information about various objects, events, and people. A database can be structured in various ways, such as relational, document-based, or columnar, allowing it to hold data in a way that can be easily queried and manipulated. It serves as an organized collection of data that is easily accessible to users and applications, providing efficient data management.

In contrast, the other options serve different purposes. A data map is primarily a tool used for visual representation of data flows and relationships, facilitating understanding of how data is organized or processed but does not store information itself. A data warehouse stores large amounts of historical data for analysis and reporting but is more focused on analytical processing rather than day-to-day operational data. Metadata refers to data that describes other data, such as its structure or meaning, but it does not maintain information about objects and events in the same way a database does.