Updating views sql server easy website updating
So that whenever a user performs an operation on the view like select, insert, update or delete internally the view performs those operations on a table.
Views can be used to reduce the complexity of the database schema, for non-IT users.
You do that by closing and re-opening the SQL Spreads Design mode by clicking the Design mode button in the SQL Spreads ribbon in Excel.
So, we can think of a view either as a compiled SQL query or a virtual table.
As a view represents a virtual table it does not physically store any data by default.
When we query a view we actually, retrieve the data from the underlying database tables.
The sample view, v WEmployees By Department, hides the complexity of joins.
Or is this more a case of senior developers/DBAs' telling junior personnel not to do this because they can unwittingly wreak havoc with an incorrect join.
You can grant permissions to a view without allowing users to query the original tables.
A view is a logical table but what it stores internally is a select statement that is used for creating the view.
To correctly update a view that is based on multiple tables we can make use INSTEAD OF triggers in SQL Server. If we have a table containing sensitive data in certain columns, we might wish to hide those columns from certain groups of users.
For instance, customer names, addresses, and their social security numbers might all be stored in the same table; however, for lower level employees like shipping clerks, you can create a view that only displays customer name and address.