About database view

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.

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.