Anonymous Asked in Cars &Transportation · 2 weeks ago

What are benefits of view?

Views can provide advantages over tables: Views can represent a subset of the data contained in a table. . Views can join and simplify multiple tables into a single virtual table. Views can act as aggregated tables, where the database engine aggregates data (sum, average, etc.) . Views can hide the complexity of data.


What is the purpose of view?

Views are generally used to focus, simplify, and customize the perception each user has of the database. Views can be used as security mechanisms by letting users access data through the view, without granting the users permissions to directly access the underlying base tables of the view.

What is view and its uses?

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 are the advantages and disadvantages of a view in a database?

What are the advantages and disadvantages of views in a database?Views doesn't store data in a physical location.View can be use to hide some of the columns from the table.Views can provide Access Restriction, since data insertion, update and deletion is not possible on the view.

What is the advantage of view in Oracle?

View is a virtual table which provides the access to subset of columns from one or more base tables. A view does not need any storage for the data as it is fetching the data from the base tables. View hides the SQL coding complexity even though the view definition SQL statement has multiple joins or unions etc.

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