The need for three level architecture, Database Management System

Assignment Help:

The need for three level architecture

The aim of the three level architecture is to divide each user's view of the database from the way the database is physically shown.

Support of multiple user views: Every user is able to access the similar data, but have a different customized view of the data. Every user should be able to change the way he or she analysis the data and this change should not affect other users.

Insulation between user programs and data that does not concern them: Users should not directly govern with physical storage details, such as hashing or indexing. The user's interactions with the database have to be independent of storage considerations.

Related Discussions:- The need for three level architecture

Create a website for online sales of movies, Niles Video Inc. wants to crea...

Niles Video Inc. wants to create a website for online sales of movies (DVD and videotapes). People will be allowed to register as customers on the website and to update their store

Explain forms based and graphical interface, Explain forms based and graphi...

Explain forms based and graphical interface? Forms based and graphical interface: graphical user interface (GUI) is a kind of user interface which permits people to interact

Define relations in tables and define primary keys, Consider the subsequent...

Consider the subsequent relations along with keys underlined Street (name, location, city) House (number, street_name) Lives (name, house_number) Define the above relations

Shared lock or read lock, Shared lock or Read Lock It is requested ...

Shared lock or Read Lock It is requested by a transaction that needs to just read the value of data item. A shared lock on a data item does not permit an exclusive lock

relationship with the owner entity, A database for the Service and Mainten...

A database for the Service and Maintenance (SM) section of a Computer sales and service Company has to be developed. SM gives after sales service to customers. SM branch has a numb

#mapping constraints, explain the mapping constraints

explain the mapping constraints

Data flow diagram of structured analysis and design, From SAD to OOAD (Stru...

From SAD to OOAD (Structured Analysis and Design (SAD) to Object Oriented Analysis and Design (OOAD). We will find here how we can map various models in SAD to different model

Define two phase commit, Define Two phase commit Two phase commit: To m...

Define Two phase commit Two phase commit: To make sure atomicity, all the sites where a transaction is being executed must agree on the final outcome of the execution. The tran

Explain view in rdbms, Explain view in RDBMS? View - A view is a relati...

Explain view in RDBMS? View - A view is a relation (virtual rather than base) and could be used in query expressions, which is, queries can be written by using the view as a re

Explain hierarchical model, Explain Hierarchical Model ? Hierarchical ...

Explain Hierarchical Model ? Hierarchical Model - It was established to model several kinds of hierarchical organizations which exist in the real world. It uses tree structur

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages