What do you understand by a view, Database Management System

Assignment Help:

What do you understand by a view? What does WITH CHECK OPTION clause for a view do?

- A view is a virtual table which comprises fields from one or more real tables.

- It is generally used to join multiple tables and get the data.

- WITH CHECK OPTION for a view prevents any modification to the data that doesn't confirm to WHERE clause of the view definition.

- This allows data belonging to the view to be updated through view.

Related Discussions:- What do you understand by a view

Construct substantial data model, PART MARKING: We will only mark TWO of t...

PART MARKING: We will only mark TWO of the four questions below but you must submit answers to all four. We will choose the questions we mark randomly and we will supply you with

Query optimization, what is meant semantic query optimization? how does it ...

what is meant semantic query optimization? how does it differ from other query optimization techniques?

libery management system, write progra

write program

Define the schema at the intermediate level of abstraction, Define Accordin...

Define According to the levels of abstraction, the schema at the intermediate level is called Ans: As per to the levels of abstraction, the schema at the intermediate level is

Define query language, Define query language? A query is a statement ...

Define query language? A query is a statement requesting the retrieval of information. The portion of DML that includes information retrieval is known as a query language.

What are the key features of oracle, What are the key features of Oracle? ...

What are the key features of Oracle? Key features of Oracle are as follows: • Read Consistency • Concurrency • Locking Mechanisms • Quiesce Database • RAC • Portability

Define query optimization, Define query optimization. Query optimizatio...

Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.

Explain group by clause in sql, Explain group By clause in SQL? Group B...

Explain group By clause in SQL? Group By clause in SQL: The GROUP BY clause can be used in a SELECT statement to collect data across multiple records and group the results thro

RDM & ER Modelling, #questiRegional Gardens has many nurseries, including W...

#questiRegional Gardens has many nurseries, including Wagga Wagga, Bathurst, Albury, Orange, and Dubbo. Each nursery is known by its campus code, eg WW, B, A, O and D respectively.

DISTIBUTED DATABASE, Define physical image of a global relation at a site

Define physical image of a global relation at a site

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages