What mechanism is used to pass information from a Web form to a database server?

When passing information from a web form to a database server, the correct mechanism involves utilizing a CGI script. CGI, which stands for Common Gateway Interface, acts as an intermediary between web servers and executable programs, typically allowing web forms to send data to a server-side script that processes the data.

In this context, when a user submits a form on a website, the browser sends the form data to the server. The CGI script processes that incoming data, interacts with the database (usually via SQL queries), and can either store the data or return a response based on the input. This process enables dynamic web applications to handle user data effectively.

REST APIs, while relevant in web application contexts, are primarily for enabling communication between different applications or services. An SQL query is the specific command used to interact with a database but does not itself serve as the mechanism for transferring the data from the web form. Similarly, the HTML form action specifies where to send the form data but does not handle the processing of that data. The CGI script is the effective mechanism for ensuring that the form data is correctly processed and managed on the server side.