Data Model College Essays Samples For Students

A database or a databank is an application where data can be stored and retrieved quickly. It is also important to know how the data is stored and organized in a database. Database mainly refers to a relational database, indeed a Relational Database Management System (RDBMS). Collection of data items that are structured as a group of officially defined tables from which data can be retrieved in various ways without having to restructure the database tables is known as Relational Database. In relational database, the complete data is stored in tables. The structure of these tables is similar to the spreadsheet, and the tables ...

Question 1

When transforming a logical database design into a physical database schema the first rule is, do not focus on physical storage challenges and the limitations of any Database Management System (DBMS) known. The thinking should be conceptual not physical, always ensure that the integrity of the data model is intact, by honoring business rules. The second rule is to ensure the integrity of the process, by thinking about the structure and not the process to make sure that all the required stages and feedback loops are taken into account. The third rule is to ensure that the whole process is practical, ...

Abstract

The paper puts into perspective the issue of product modeling methods. The product modeling structure should be done in the most optimal way to ensure that the intended purpose is indeed achieved. The process of modeling a product consists of six major activities; however, they can be composed into several sub activities depending on the number of components involved in the entire process. The six major activities discussed include the definition of products components, definition of product assortment, product structuring, and creation of a master structure, documenting, and definition of the structure views of the product.

Introduction

Product structure is a decomposition of ...

Discussion 1

What is the relationship of use-case modeling to project management?
Use case modeling proves to be a vital tenet of UML (unified modeling language). System analysts and developers of any project; software or business, always find themselves being plagued by the need to create a system that is user centered in all aspects. For use case modeling, the analyst and developer aim at creating a product that is not only user-friendly and interactive but also easy to use and manage at the user level (Whitten, Barlow, & Bentley, 1997). Similarly, project management strives to plan, initiate, control and close a ...

Innovative Applications

Introduction
The health of every citizen should be among the top priorities of a nation. Even better, the health of every citizen should be in the top of all the priorities of a nation. This is because a community, nor a society cannot function given that its citizens are unwell. Their compromised health compromises their productivity and thus, affects many other aspects such as the economy and the education sector. The labor force would not be functional with unhealthy workers and may cause the downfall of most industries. As such, the optimization of the health care industry should be ...

The accuracy of the information that health organizations use is a critical asset to the healthcare decision making. The decision made should be based on identification and assessment of appropriate data sources done within the boundary of the data of interest and its availability. The healthcare information is extremely critical as it primary; contains demographic information from admission, medication uses, discharge and treatment of all patients. The health data also contains coronary anatomy and intervention from the laboratory module (Lichtenstein 2004). In addition, health data is obtained directly from the patients, therefore, gives a true reflection the state of the hospital.
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Introduction

Data is the building block of any system in the world today. A repository of such related data is called a database. A relational database organizes the data into tables that are related to each other. For example, in a relational database system, there exists one table that contains the data about cars manufactured by a company and the second table contains the information about car parts. These tables are related to each other, because each car is made up of parts, and each car part can be in one or more cars.
Haley (1991) defines a table as the principal building ...

ENTITY RELATIONSHIP

In order to develop an entity relationship diagram, different aspects are put in place. To start with, we define the major business that needs to be automated. This forms the entities. Attributes are defined by the various storage fields and tables in the database. In the case of Celtic Analytics we are going to implement a data warehouse that bears the resemblance to a relational database system.
The process will involve the translation of ideas into sophisticated plan that will permit the development team to put together a relational data warehouse schema in lieu of the key functionality of the warehouse.
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ERDs are used to represent logical relationships between entities. An entity is a person, object, place, orders, products, etc. Information systems recognize relationships between entities. For instance a customer entity can reveal several instances of an order, sales representative, location, among others.
Entity relation diagrams are essential in the design of relational databases. Using an entity relationship data model, abstract schemas are designed and denoted with various entities. Likewise, in object-oriented data model, objects are denoted with different classes with a provision that segregate functional primary data from processes that are involved in creation modification of such data. The functional areas ...