What is an updatable view?
Updatable views. An updatable view is a special case of a deletable view. A deletable view becomes an updatable view when at least one of its columns is updatable. The column resolves to a column of a table (not using a dereference operation) and the READ ONLY option is not specified.Click to see full answer….
Updatable views. An updatable view is a special case of a deletable view. A deletable view becomes an updatable view when at least one of its columns is updatable. The column resolves to a column of a table (not using a dereference operation) and the READ ONLY option is not specified.Click to see full answer. Furthermore, what is meant by saying a view is updatable? Update View An updatable view is one which allows performing a UPDATE command on itself without affecting any other table. how do you make a updatable view? However, to create an updatable view, the SELECT statement that defines the view must not contain any of the following elements: Aggregate functions such as MIN, MAX, SUM, AVG, and COUNT. DISTINCT. GROUP BY clause. HAVING clause. UNION or UNION ALL clause. Left join or outer join. Besides, what are updatable views in SQL Server? Views in SQL are kind of virtual tables. A view also has rows and columns as they are in a real table in the database. We can create a view by selecting fields from one or more tables present in the database. A View can either have all the rows of a table or specific rows based on certain condition.What is updatable view in Oracle?Views in Oracle may be updateable under specific conditions. An updatable view is one you can use to insert, update, or delete base table rows. You can create a view to be inherently updatable, or you can create an INSTEAD OF trigger on any view to make it updatable.
