Data warehouse

Enaam AlOtaibi 1460008Norah AlHarbi 1460003

CPIS 620Dr. Abdullah Alalmalaise

1-INTRODUCTION

O In recent years, the computer technology rapidly develops in the management.

O Computer use DSS in the enterprise's as an intelligent management.

O Realizing decision support based on the database technology.

O Database is widely applied in the society such as : financial management system, MIS, banking transaction system and so on ,which are the typical database application procedures.

O Now lives cannot leave the database, and cannot leave the database application procedure.

2-DATA WAREHOUSE AND DECISION SUPPORT SYSTEM

O Data Warehouse (DW)

O Decision Support System (DSS)

A-Data WarehouseThe concept of DW :O DW is one organization form of data

storage.O In the 80's intermediate period was

early proposed by IBM Corporation. O In the 90's initial period famous DW

expert named W.H.Inmon described DW in its work "Building DW" like the following: Integrate, Subject Oriented, Non-Volatile.

A-Data Warehouse

Characteristics of Data Warehouse:1. Face subject. 2. Integration.3. Relatively stable.4. Reflects the historical changes.

A-Data WarehouseData organization of Data Warehouse:O DW obtains the

primary data from the traditional database.

O in DW the logical organization data is composed of three or four layers data which is organized by metadata .

B-Decision Support SystemO DSS is a kind of computerized

information systems that support decision making activities. 

O DSS provides each kind of decision information as well as solution of commercial question for the enterprises.

O This paper proposes one kind of general DSS skeleton:

3-Design Of Decision Support System

O There are two kinds of DSS views: 1. thinks so long as the system has

certain supports to the decisions is DSS“

2. thinks DSS is interactive computer-based system which can help the decision-maker using data and model to solve non- structure question".

3-Design Of Decision Support System(cont.)

O The majority is not DSS because most of them do not help to solve the non- structure problems.

O Some are not interactive; some databases become the model store house and they are not entire

3-Design Of Decision Support System(cont.)

3-Design Of Decision Support System(cont.)

O OLAP permits analysis man browse DW and carry on the multi-dimensional analysis by interactive way and can promptly propose information from mutative data and not too complete data the movement which relates with enterprise management.

3-Design Of Decision Support System(cont.)

O DW does not like the traditional database which faces the service level. It mainly faces the high level application and carries on the decisions support. Thus in fact, it is expansion of DSS database.

4-Conclusion

O Propose DSS compose of DW, OLAP,DM .

O In DSS, the data analysis and decisions main support technology is OLAP technology and data mining technology.

References :O Q.Han, X.Gao,Research of Decision

Support System Based on Data Warehouse Techniques,2009.

O F.McFadden,Data Warehouse for EIS: Some Issues and Impacits, 1996.

Thanks