Description: An updatable view is a view that allows data to be inserted into the underlying tables. In the context of databases, a view is a virtual representation of one or more tables, which can simplify data querying and provide an additional layer of security. Updatable views are particularly useful because they allow users to perform insert, update, and delete operations directly through the view, making data manipulation easier without needing to interact directly with the underlying tables. For a view to be considered updatable, it must meet certain criteria, such as not containing aggregate functions, not including calculated columns, and ensuring that all necessary columns for insertion are available in the view. This allows modification operations to be properly reflected in the original tables, maintaining data integrity. Updatable views are a powerful tool in database design, as they enable developers and database administrators to offer a more user-friendly and controlled interface for data manipulation while protecting the underlying structure of the database.
