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What happens when you query a view?
When you query a view, it looks exactly like any other database table. When you modify the data you see through a view, you are actually changing the data in the underlying base table. Conversely, when you change the data in the base tables, these changes are automatically reflected in the views derived from them.
What is a view query?
A view is actually a composition of a table in the form of a predefined SQL query. A view can contain all rows of a table or select rows from a table. A view can be created from one or many tables which depends on the written SQL query to create a view.
Are views stored in a query?
Views are a special version of tables in SQL. They provide a virtual table environment for various complex operations. The view is a query stored in the data dictionary, on which the user can query just like they do on tables. It does not use the physical memory, only the query is stored in the data dictionary.
What’s the difference between a view and a query?
SQL – Using Views. A view is nothing more than a SQL statement that is stored in the database with an associated name. A view is actually a composition of a table in the form of a predefined SQL query. A view can contain all rows of a table or select rows from a table.
What makes a view a view in SQL?
In SQL, a view is a virtual table based on the result-set of an SQL statement. A view contains rows and columns, just like a real table. The fields in a view are fields from one or more real tables in the database. You can add SQL statements and functions to a view and present the data as if the data were coming from one single table.
Can a data definition query be opened in design view?
Data-definition queries are a special type of query that does not process data; instead, data-definition queries create, delete or modify other database objects. SQL-specific queries cannot be opened in Design view. They can only be opened in SQL view, or run.
How are views used to store complex queries?
Views can be used to store complex queries. Views can also be used to rename the columns without affecting the base tables provided the number of columns in view must match the number of columns specified in select statement. Thus, renaming helps to to hide the names of the columns of the base tables.