Description: View update is the process by which data in a database view is modified, which can have a direct impact on the underlying tables that feed that view. In the context of databases, a view is a virtual representation of one or more tables, allowing users to query data in a simplified and structured manner. Views can be used to hide the complexity of the underlying tables, providing a more user-friendly interface. However, not all views are updatable; those considered ‘updatable’ allow modifications made in the view to be reflected in the original tables. This process is crucial in data management, as it helps maintain the integrity and consistency of information. View updates are commonly used in relational database systems, where developers can create views that simplify queries and allow for more efficient data manipulation. Additionally, SQL query optimization can benefit from views, as they can be designed to improve the performance of complex queries by predefining a dataset that can be reused in multiple queries.
