Database Systems and Data Management Essay - 2764 Words

Table of Contents , 1. Introduction 3 2. Data Management 3 2.1 Database 3 2.2 Database Systems 3 2.2.1 Requirement modeling 4 2.2.2 Schema design : 4 2.2.3 Implementation 4 2.3 Project 4 3. Data Mining 5 3.1 Knowledge Discovery in Databases (ITCS 6162) 5 3.1.1 Association rules 6 3.1.2 Classification 7 3.1.3 Clustering 7 3.1.3.1 Partitioning methods 8 3.1.3.2 Hierarchical methods 8 3.1.4 Anomaly Detection 8 3.1.4.1 Graphical based 9 3.1.4.2 Statistical based 9 3.1.4.3 Distance based 9 3.2 Knowledge Based Systems (ITCS 6155) 9 3.2.1 Information Systems 9 3.2.2 Query Languages and their Semantics 10 3.2.3 Project 11 4. Conclusion 12 5. References 12 1. Introduction Databases always used to fascinate me from†¦show more content†¦In this file processing system the data is defined as a part of application program. So the program works only for the specific data. Database System is an application program that can access the database by sending queries or requests to the DBMS. DBMS-Database Management System is a collection of software programs used to define, construct, maintain and manipulate data in a database. The DBMS defines a Data Definition Language-DDL for declaring and modifying the schema, a Data Manipulation Language-DML for Querying and modifying the data. Mundane operations on data are automated in the DBMS so that we dont have to program over and over for a specific data and we can write complex data manipulations in just few lines. it also makes concurrent access/manipulations possible so that many users can use data at the same time. DBMS uses three steps in building a database application. 2.2.1 Requirement modeling: It is a Conceptual model(ER-Model). This step decides on what entities should be part of the application and how they should be linked depending on its relationship with other entities. 2.2.2 Schema design: In this phase the Relational schema and relational tables are designed from the ER-model. It decides on the set of tables and attributes that have to be included in the schema. It defines the required tables in the database and populates the database. 2.2.3 Implementation: It Implements the database application in a Database specific programming languageShow MoreRelatedData Modeling For A Relational Database Management System1712 Words   |  7 PagesThe need to store and evaluate data is a perpetually growing field in the world of information systems. From the days of using flat files to very large database management systems that store petabytes of data in real time, the practice of building information from data continues to evolve. Today, the relational data model is quite ubiquitous and is used in a plethora of information systems ranging from accounting systems, banks, retail business, and scientific usage. 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