Data Sysytems Essay
Data Systems Learning Team Paper
Team A: Renee Wilson, Ferdinand Habijan,
Maryrose DeFino, Stasia Bowling
HCI 520 Data Management and Design
January 16, 2012
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 …show more content…
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.