What is one of the main tasks of an ORM?

An Object-Relational Mapping (ORM) tool is designed to facilitate the interaction between an application and a relational database by allowing developers to work with data as objects rather than writing raw SQL queries. One of the core functionalities of an ORM is the ability to map data from your application directly to the corresponding database tables. This mapping process enables developers to use object-oriented programming concepts when working with data, which makes it easier to manipulate and retrieve information without getting involved in the complexities of SQL syntax.

By using an ORM, developers can define database schemas as classes, and each instance of those classes corresponds to a row in the table. This approach not only streamlines the process of data handling but also improves code readability and maintainability by reducing boilerplate and repetitive code associated with direct database access.

The other options presented involve tasks that are outside the primary scope of what an ORM is intended to do. For instance, writing SQL queries directly would be a function of a database administrator or a developer working without an ORM, and compiling JavaScript code is relevant to client-side programming rather than database interactions. Similarly, styling web pages with CSS pertains to front-end development, distinctly separate from the ORM's purpose of managing data relationships in a back-end context.