Description: View alteration is the process of modifying an existing view in a database. A view is a virtual representation of one or more tables in a database, allowing users to query data in a simplified and structured manner. By altering a view, its definitions can be changed, including modifying the columns displayed, adding filters or conditions, and restructuring the underlying query. This process is essential for maintaining the relevance and utility of views as user requirements or data structures change. Views are particularly useful in environments where controlled access to data is required, as they allow database administrators to provide a layer of security and simplification. View alteration is commonly performed using the SQL `ALTER VIEW` statement, which enables developers and administrators to modify the view’s logic without needing to drop and recreate it, saving time and effort. In summary, view alteration is a powerful tool in database management that facilitates the adaptation of queries to the changing needs of users and data structures.
