A data warehouse is constructed by integrating data from multiple heterogeneous sources. It supports analytical reporting, structured and/or ad hoc queries and decision making.
2. DATA WAREHOUSE
• Data Warehouse also known as Enterprise
Data Warehouse (EDW) is a system used for
reporting and data analysis.
• They store current and historical data.
3. The data warehouse architecture has many types.
Single Tier
Two Tier
Three Tier
Multi Tier
ARCHITECTURE…..
4. SINGLE-TIER ARCHITECTURE
Processing of data takes
place in the main frame
only.
Various devices are
connected to it just for
the purpose of display.
They access data through
dumb terminals.
5. TWO-TIER ARCHITECTURE
• It is a client-Server
Architecture.
• There is a direct
communication
between the client
and the server.
• They are tightly
coupled and thus 2-
tier application is
faster.
6. THREE-TIER ARCHITECTURE
• The Client layer is used for the
design purpose.
Ex. Designing a form with
text, label etc.
• The Business layer is the
interface between the Client and
the Data Access Layer and makes
their communication faster.
• Actual database comes in the
picture.
Contains methods to
connect with the database.
Performs manipulations
with the database like inserting,
updating, deleting.
Client Layer
Business Layer Data Layer
8. Get yourself trained with Data Warehousing and
become a data analyst…..
To know more details,
Click here: https://goo.gl/kJJZPs
Want your future to blossom in a smart way???
