Essays on Data Warehouse

An entity relationship model/diagram commonly referred to as ERD is a data model method that represents system entities and relationships between the entities. When ERD created is by analysts, it enables understanding of business model deeper and links business models to database. The ERD theoretically represents model of records used in representing entity frameworks. The major and important elements in an ERD are entities, attributes plus relationships. An entity refers to a thing or a concept that has distinct and independent features or characteristics, for example a car. An attribute refers to the characteristics that an entity thing contains. ...

Data warehouses/data marts are closely related concepts of data structuring, but there exist a few differences between them. One of the differences is that a data warehouse is used for multiple subject areas, while a data mart holds a specific subject area, for example, sales or finance (Chu, 2004; Laberge, 2011). Another difference is that data warehouses hold significantly detailed information, while data marts, on the other hand, hold summarized data. In addition, a data warehouse is used for the integration of different data sources, while a data mart is used for the integration of information related to a ...

Introduction

The emergency department provides the urgent services to the ill patients. In the emergency department, the doctors provide the enhanced care to the patients when they are in the critical situation. With the advancement in the technology, the health care professionals provide the advanced treatment to the patients in the emergency department (Petrillo-Albarano & Little, 2010). On the other hand, intensive care units are also called ICU. The patients who are in a critical condition are admitted to the ICU. At first, the patients are treated in the emergency department, but if they cannot recover from the emergency department they ...

Data Warehousing

The field of information system has evolved at a rapid pace because of which data warehousing has emerged. The main function of data warehousing is analysis and dealing with a query. It is a time-variant, subject oriented, integrated, and un-updatable collection of a company’s data. It is mainly used for the decision-making process, management, and business intelligence. The data warehouse of the company is the place where its data can be stored physically. Some of the components of the data warehouse are software, interactive, and directory. Software is an important element where the original data is stored. It ...

Introduction

The Alfa Bank is a medium sized bank, which has branches in Russia, Ukraine, Belorussia, Nederland, and Kazakhstan. The bank is a universal financial institute and provides all types of financial services to individuals, small and medium-sized businesses. Now the bank already has developed hardware and software infrastructure. The operating system for workstations as well as for servers is Windows. It uses Colvir software as ABS, Compass as card system, CRM (customer relationships management) software and different kinds of distance banking solutions for more efficient customer service.

Problem description

For years of bank operating a huge data amounts were collected (hundreds ...

The primary difference between a data warehouse and a database is the that a data warehouse is a repository of data that has been obtained from different sources over time, and that is stored in a unified schema and is typically used for decision support and analysis. On the other hand, a database is a representation of the presented status of particular data that has been stored and is mainly used to handle live quires and online transactions. The similarities between a database and data warehouse are that they are both means of storing large amounts of data. Characterization ...

Different data elements are significant informatics components that are extremely necessary for the flow of information through the structure of the healthcare organization. It is on this basis that the following article will discuss three data elements that one is likely to choose from in the analysis of care in a health care entity. The first element that would be chosen would be a data warehouse. Basically, having a data warehouse is a crucial element in light of the several initiatives driven by data particularly in the healthcare sector. With the data element, the healthcare system will be capable ...

The significant feature of modern business conduction is regarding information as an important and powerful ranking high resource. Comparing to the last decade, nowadays the revolution of information systems and improvement that it brought to the processes of management are evident to the business world. Implementation of high technology revolution achievements provides organizations with useful opportunities such as acceleration of key business processes, raising of gains and competitiveness maintaining. The major function of information systems within the corporate context can be described as the process of business data collecting in order to transform it to the useful information, its ...

Business Intelligence and Data Warehouses

Business Intelligence and Data Warehouses The term “business intelligence” have come to define the efficiency with which an organization can improve over itself without the usual uncertainty that comes with such decisions. With the rapid expansions of many global corporations, understanding and analyzing huge amounts of transactional data (of all their activities), have become the only solution to manage their future as well as current actions. Most often multinational corporations find themselves at loss whenever rapid business decisions need to be taken which, to the desperation of many corporates, will go on to define the future of their company. ...

1. The organizations need in their process to have access to transactional systems to generate, analyze and consult information, but surely the company could have problems regarding response times; the information distributed in different systems that are not homogeneous could cause inflexible and complex reports and results.

Historical Justification

Today, information technologies have automated processes typically repetitive or administrative nature, using what we call information operational systems. The operational applications are those that meet the operational needs of the company. In such systems, the most important concepts are updating and response time. Once satisfied the most pressing operational needs, a new ...

Question 1

a) Information Systems for an Airline: Airline industry has been utilizing the merits of computer based information systems to provide a better class of service for its customers, since the 1970s. These industries had invested a lot in transaction processing systems and management information systems since then. Even though decision support information systems is still at its infancy in Airline industry, latest studies have revealed their importance in fixing business related parameters of Airlines (such as Airfares) in improving their business value without making unnecessary compromises in profits . Integration of decision support systems with either of the aforementioned information ...

IT-experts treat data mining (storage) and retrieval as the most important application of the data warehouse technology (see, e.g., Inmon, 1992; Inmon, 1997). In particular (or most largely), this refer to the retrieval of the latent predicting information from large databases (Edelstein, 1997; Thearling, 1998). In the present essay, most important and promising trends of automatic tools to store, mine, retrieve, and process data are reviewed.

Integration of text, data, code, and flows

In DBMS (database management systems) area, the main attention was always drawn to the organization, storage, analysis, and retrieval of structured data. The development of Internet has shown that more complex data types ( ...

Management Support System

The data and information loads are monitored and controlled Normally, large amounts of historic data are utilized Data are usually standardized to make it simple and maximize performance Planned and unplanned queries are common in data warehouse Describe the data warehouse process. The warehouse process involve the processes of reporting and data analysis for decision-making. It is usually design for the purpose of inquiring and analyzing. The process involve various stages, which integrate ETL (Extract, Transform, and Load) process. These stages are access to data, data modeling, acquisition of data, cleaning and validation of data, data matching and data ...