Asked by: Abderrazzaq Donatitechnology and computing databases
What is view in SQL and why it is used?
Last Updated: 7th March, 2020
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Furthermore, what is the purpose of views in SQL?
Use of a View Views are used for security purposesbecause they provide encapsulation of the name of the table. Datais in the virtual table, not stored permanently. Viewsdisplay only selected data. We can also use Sql Join s inthe Select statement in deriving the data for theview.
Additionally, why do we use views instead of tables? Views can provide many advantages overtables: Views can represent a subset of the datacontained in a table. Views can limit the degree ofexposure of the underlying tables to the outer world: agiven user may have permission to query the view, whiledenied access to the rest of the basetable.
what are views How are they useful?
A view is a virtualtable based on the result-set of an SQL Statement. It has rows andcolumns like in a real table but does not hold thedata.
In what situations would you use a view?
Simplicity - Views can be used to hide and reusecomplex queries.
Views can provide advantages over tables:
- Views can represent a subset of the data contained in atable.
- Views can join and simplify multiple tables into a singlevirtual table.