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If we are discussion about the role of views in SQL server then founded that it is kind of virtual tables.
A view has also some rows and columns as they are in a real table in the database.
We can also create a view by selecting fields from one or more tables present in the database.
Where a view can either have all the rows of a table or specific rows based on certain condition.
And where the VIEW in SQL is a logical subset of data from one or more tables. And mostly, the view is used to restrict data access.
The role of Views is - It can be represent a subset of the data contained in a table; with the result that a view can limit the degree of unveiling of the underlying tables to the outer world.
When the listed users may have permission to query the view, And while denied access to the rest of the base table.
And A views can join and simplify multiple tables into a single virtual table.
A views can enactment as aggregated tables, where the database engine aggregates data (sum, average, etc.) and presents the calculated results as part of the data
Where a view can hide the complexity of data; for the example, the view could appear as Sales1001 or Sales2001, transparently partitioning the actual underlying table
In the views, It takes a very little space to store the data in SQL server; And the database contains only the definition of a view, not a copy of all the data which it presents.
The Views may provide additional security, depending on the SQL engine used.
Syntax for creating a View,
CREATE or REPLACE VIEW view_name
AS
SELECT column_name(s)
FROM table_name
WHERE condition
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Rahul Roi
03-Nov-2020If we are discussion about the role of views in SQL server then founded that it is kind of virtual tables.
A view has also some rows and columns as they are in a real table in the database.
We can also create a view by selecting fields from one or more tables present in the database.
Where a view can either have all the rows of a table or specific rows based on certain condition.
And where the VIEW in SQL is a logical subset of data from one or more tables. And mostly, the view is used to restrict data access.