What kind of expression is used to access entities in the Orderbook view?

The correct answer focuses on the use of a query expression when accessing entities in the Orderbook view. A query expression is specifically designed to retrieve or manipulate data from an underlying data source, allowing users to specify criteria for selected entities.

In the context of the Orderbook view, which typically deals with various financial transactions or orders, using a query expression enables users to fetch the relevant data entries efficiently based on specific parameters or conditions. This can include filtering orders by status, type, date, or other attributes relevant to the transactions being monitored.

The other types of expressions mentioned, such as a data entry expression, configuration expression, and HTML expression, serve different purposes. Data entry expressions are focused on inputting and validating data, configuration expressions involve setting up system parameters or options, and HTML expressions are related to the presentation layer of web applications. None of these expressions are designed to access or query data in the manner required for interacting with an Orderbook view.