Linearity and Resolution
Apart from accuracy and precision, there are more factors that determine the soundness of a measurement system. Two of these important factors are as follows: Resolution: Resolution is the ability to see fine details in a system. This ability also gives the system, the ability to distinguish different readings from one another. A good example […]
Change Management and Organizations
Every Christmas, Apple plays to the gallery where all Americans and the rest of the Apple fans across the world wait eagerly for the new promised product of the future and expectantly Apple has unveiled the new, slimmer and improved I Phone 5G. It is no secret that Apple is a cult world over. With […]
Lack of Regulation as a Cause for the Global Financial Crisis
The previous article had touched upon the lack of regulation as a cause for the global financial crisis. This article looks at this aspect in detail. To understand why the lack of regulation was one of the contributory factors for the crisis, one has to view the issue starting with the repeal of the Glass […]
The Economics of Electronic Healthcare Records
Administrative costs form a major portion of the cost structure of any health care provider. In the case of the United States, administrative costs account for more than 20% of the total costs which need to be incurred in order to serve patients. It is for this reason that many healthcare organizations are trying to […]
Asset Management and Budgetary Control
One of the major financial functions is the management of fixed assets. Asset management module primarily maintains asset register, which provides information about asset related transactions. Asset Management thus helps in keeping track of fixed assets, handling fixed asset depreciation for fiscal reporting and revaluation of asset. Budgetary control (BC) module is another important finance […]
One of the critical components in the information technology age is the data. Data is the source of all the information and information is valuable for decision making process.
Decision support systems are developed to support executive management and relevant decision makers. In the modern era, there is large volume of information is available. Data warehouse is required to store huge volume of data.
Since the data warehouse is supporting decision support system, therefore, it should be subject oriented, integrated, collected over a period of time and static.
Data warehouse has subject oriented data. This subject oriented data could be information such as sales, customer name, etc. Data warehouse excludes information, which is not useful for decision-making process.
Data warehouse is developed as an integration of multiple heterogeneous data sources. As the data source have their own data protocol, data processing is required while data warehousing.
Data warehouse provides information with time as function. This gives historical perspective to the information.
Once data is captured into the data warehouse, it cannot be changed.
Data within the data warehouse is maintained in form of star schema, snowflake schema and galaxy schema.
The data mart is that portion of the access layer of the data warehouse which is utilized by the end user. Therefore, data mart is a subset of the data warehouse. Data mart is usually assigned to a specific business unit within the enterprise. Data mart is used to slice data warehouse into a different business unit. Typically, ownership of the data mart is given to that particular business unit or department.
The primary utility of data mart is business intelligence. A data mart requires very less investment compared to data warehouse and therefore it is apt for smaller business. Set up time for data mart is very less again making it practical for smaller business.
The main advantages of data mart are as follows:
OLAP or Online Analytical Processing is a concept in which data is analyzed through multiple dimensions with help of structure called cube. OLAP helps in converting data into information.
The main objective of OLAP is to summarize information for decision making process from large data base. The report generated through OLAP can be presented in a format as per the requirement of end user.
The advantages of OLAP are as follows:
There are three types of OLAP multi-dimensional OLAP, relational OLAP and Hybrid OLAP. In multi-dimensional OLAP data is usually stored in proprietary structure suitable for multi-dimensional analysis. In relational OLAP data base is structure through standard database in star or snowflake schema. A combination of multi-dimensional OLAP and relational OLAP is the hybrid OLAP.
Your email address will not be published. Required fields are marked *
Communication Systems and Groupware – Information System Concepts that Apply in All Functional Areas of Business
February 12, 2025
