Data Sysytems Essay

2821 Words Feb 16th, 2012 12 Pages
University of Phoenix

Data Systems Learning Team Paper

Team A: Renee Wilson, Ferdinand Habijan,
Maryrose DeFino, Stasia Bowling

HCI 520 Data Management and Design

January 16, 2012

Steven Fowler

Introduction
This paper will address data systems; a database is an organized group of files that are related and considered the supporting constructs of a database management system. It is maintained and considered an integral part of most organizations worldwide. The database management system houses a program that enables storage, modification, and extraction of information from a database. In this paper team A will address database the phases of the database life cycle, and provide a conceptual representation for a
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Data encryption and firewall are built. An implementation plan or written schedule is important to take steps to ensure deployment and transition is achieved. Implementation includes developing training requirements and schedules. A good training experience is the first step towards end user acceptance.
Analysis of Database Types
Database System types include single, multi-user, centralized and distributed. The objective of the database is to maintain the integrity and consistency of the data. This consists of a data dictionary that provides definitions of the data, elements and their relationships. Data storage and security management both need to be considered when deciding upon a database type for an organization. Database Models are used to represent data structures and display relationships within a database. Conceptual models include Entity relationship database models (ERDBD) and Object-oriented models (OODBM). Relationships in Conceptual models are 1:1, 1: M, and M: M. Implementation models include: Hierarchical database model (HDBM), Network database model (NDBM), Relational database model (RDBM) and Object oriented database model (ODBM) (Learn IT: The Power of the Database, 2008). Following is a description of each type of database.

Hierarchical Databases: are represented by an inverted tree. Each parent can have many children. Each child has one parent.
Network

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