About database view

RE: About database view

priyankam1705 — Mon, 04 Oct 2021 09:46:37 GMT

The view is virtual table created from the base table and they don't have physical existence in the database. it contains rows and columns like a real table.

views are used for security purpose, for ex. u have a data of US employee like emp_id, emp_name, emp_department and their emp_SSNNo.....now u dont want to show the SSN number to the user u can hide it using views means u are keeping it secure and hiding confidential info.

RE: About database view

Richard Michaelis — Mon, 04 Oct 2021 09:06:43 GMT

super short: it is a "view" of specific wanted values of two or more DB tables joined by common attributes.

Example:

Table "Office" with columns
Id, office name, addressId, employeeCount,...
table "address" with columns
Id, post code, city, street, house number

you can join then via office.addressId - adress.id fields so a "unique conneciton" is possinle.
your view CAN have the following columns then:
OfficeId, officeName, post code, city, street, house number

mad by an join SQL statement https://www.w3schools.com/sql/sql_join.asp

used in Appian context: performance improvements (DB joins are faster), more smaller tables instead of view big tables with redundant data but with view they can be connected easily.

RE: About database view

manikumarc — Mon, 04 Oct 2021 06:50:19 GMT

can you please refer to the following article.