View is like a virtual table which enable us to get information of multiple tables. yes we can insert,update and delete view in sql server.

How do I delete a view in SQL?

1. In Object Explorer, expand the database that contains the view you want to delete, and then expand the Views folder.
2. Right-click the view you want to delete and click Delete.
3. In the Delete Object dialog box, click OK.

How do I delete a view?

DELETE Rule Rows from a join view can be deleted as long as there is exactly one key-preserved table in the join. If the view is defined with the WITH CHECK OPTION clause and the key preserved table is repeated, then the rows cannot be deleted from the view.

Can we delete the view?

Well you can delete from a view if that is what you are asking, but you can’t have a view that deletes information. The view is a portion of data from the underlying tables. Provided that you have permissions, you can do the same data manipulation in views that you can do to a table directly.

How do I delete a schema view?

Use the DROP VIEW statement to remove a view or an object view from the database. You can change the definition of a view by dropping and re-creating it. The view must be in your own schema or you must have the DROP ANY VIEW system privilege. Specify the schema containing the view.

How do I delete a row in a SQL view?

If you want a row to disappear from a view, you need to either delete the data from the real tables behind the view, or alter the view-creating SQL so that that particular row won’t be shown in the view.

How do I edit a view in SQL?

1. In Object Explorer, click the plus sign next to the database where your view is located and then click the plus sign next to the Views folder.
2. Right-click on the view you wish to modify and select Design.

How do I delete a view in Oracle SQL?

The syntax for the DROP VIEW Statement in Oracle/PLSQL is: DROP VIEW view_name;view_name. The name of the view that you wish to drop.

What Cannot be done on a view?

What cannot be done on a view? Explanation: In MySQL, ‘Views’ act as virtual tables. It is not possible to create indexes on a view. However, they can be used for the views that are processed using the merge algorithm.

Which SQL statement is used to remove a view from your schema?

We can use a DROP statement to remove a view from the database.

Article first time published on

Which statement is used to remove a view?

A view is deleted with the DROP VIEW statement.

How do I delete a view in hive?

The general syntax for dropping a view is as follows: DROP VIEW [IF EXISTS] view_name; Where: [IF EXISTS] : Is an optional clause.

How do I drop a view in database?

Since a view is a virtual table, it is relatively easy to drop the view and begin again. The syntax is DROP VIEW followed by the table name: use the IF EXISTS command to make sure the system checks for the existence of the table. Once a view is dropped it cannot be referenced again.

How do I delete a view in MySQL?

The syntax for the DROP VIEW statement in MySQL is: DROP VIEW [IF EXISTS] view_name; view_name. The name of the view that you wish to drop.

Can we alter a view?

You can also use ALTER VIEW to define, modify, or drop view constraints. This statement does not change the definition of an existing view. To redefine a view, you must use CREATE VIEW with the OR REPLACE keywords. … Invalid materialized views cannot be used by query rewrite and cannot be refreshed.

What is normalization in SQL?

“Database normalization is the process of restructuring a relational database in accordance with a series of so-called normal forms in order to reduce data redundancy and improve data integrity.

What is difference between table and view?

A table is structured with columns and rows, while a view is a virtual table extracted from a database. The table is an independent data object while views are usually depending on the table. The table is an actual or real table that exists in physical locations.

How do I delete a virtual table in SQL?

SQL VIEW can be created by a SQL query by joining one or more table. If you want to delete a SQL view, It is done by SQL DROP command you should use the following syntax: SQL DROP VIEW syntax: DROP VIEW view_name.

Can we delete data from view in Oracle?

When you delete rows from an updatable view, Oracle Database deletes rows from the base table. You cannot delete rows from a read-only materialized view. If you delete rows from a writable materialized view, then the database removes the rows from the underlying container table.

Does view contain derived columns?

View never contains derived columns.

Are views stored in databases Yes No?

A view is a virtual table whose contents are defined by a query. Like a table, a view consists of a set of named columns and rows of data. Unless indexed, a view does not exist as a stored set of data values in a database.

How is view created and dropped in DBMS?

Creating Views Database views are created using the CREATE VIEW statement. Views can be created from a single table, multiple tables or another view. To create a view, a user must have the appropriate system privilege according to the specific implementation. CREATE VIEW view_name AS SELECT column1, column2…..

Why view is used in SQL?

Views are used for security purposes because they provide encapsulation of the name of the table. Data is in the virtual table, not stored permanently. Views display only selected data. We can also use Sql Join s in the Select statement in deriving the data for the view.

What is the difference between view and materialized view?

Materialized views are disk based and are updated periodically based upon the query definition. Views are virtual only and run the query definition each time they are accessed.

Can we replace materialized view in Oracle?

No, you cannot alter the query of a materialized view without dropping it. The CREATE MATERIALIZED VIEW syntax does not support that feature. The ALTER MATERIALIZED VIEW is used to modify an existing materialized view in one or more of the following ways: To change its storage characteristics.

Which SQL statement would you use to remove?

The DELETE Statement in SQL is used to delete existing records from a table.

Which of the following SQL statement is used to remove data from a database?

The SQL DELETE statement is used to delete records from a table whereas the DROP statement is used to delete a table or a database. The TRUNCATE TABLE statement can also be used to delete records from a table.

What are the DML commands in SQL?

• INSERT : It is used to insert data into a table.
• UPDATE: It is used to update existing data within a table.
• DELETE : It is used to delete records from a database table.
• LOCK: Table control concurrency.
• CALL: Call a PL/SQL or JAVA subprogram.
• EXPLAIN PLAN: It describes the access path to data.

Which SQL statement would you use to create the view EMP?

Syntax. Views are created using the CREATE VIEW statement.

Which of these queries will you use to drop the EmpbDays view?

ALTER DROP VIEW EmpbDays: DROP VIEW EmpbDays: DELETE VIEN EmobDays: “Which of these que…

Does view Take memory?

Views are a special version of tables in SQL. … 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.