Database Essays

  • Advantages And Disadvantages Of Database

    979 Words  | 4 Pages

    There are many advantages and disadvantages of database: Advantages of the database: Substantial Time Saving: Databases save time. Retrieving a single record, which may take several minutes of digging in a paper-based filing system, can be done with just a few clicks in a computerized database. Merging database records with documents makes producing paper reports almost instantaneous, eliminating hours of retyping. Data entry screens can be designed to let you see related records as you create a

  • Database Management System: Legacy Database Systems

    1258 Words  | 6 Pages

    Legacy Database Systems What is a Database? Data is collection of facts and figures which can be processed to produce information whereas a database is a collection of related data. For Example, Name of a student, age, class and the subjects can be counted as data for recording purposes. And the names, telephone numbers, and addresses of the people which have been recorded in an indexed address book or stored on a portable hard drive using software such as Microsoft Access or Excel. This collection

  • Integrity In Database Research

    1421 Words  | 6 Pages

    referential integrity important in a database? Entity Integrity: The relational model states that every relation, it must have an identifier, called the primary key (PK), in such a way that every row of the same relation be identifiable by its content, that is, by a unique and minimal value. The PK is a non-null set of attributes. The same format applies to the foreign key (FK) because each foreign key matches an existing primary key. A simple constraint of database relational model (RM) that refers

  • Constraints In Database Management

    979 Words  | 4 Pages

    Integrity: Database displays the integrity. It means that accurate reflection of its UOD. The process of ensuring integrity is a major feature of modern information systems. The process of designing for integrity is a much neglected aspect of database development. e.g. Extension: Company Modules: Computer Science Department Marketing Department Electronics Department Employees:

  • Pros And Cons Of Database Security

    1665 Words  | 7 Pages

    Database security concerns the use of a broad range of information security controls to protect databases (potentially including the data, the database applications or stored functions, the database systems, the database servers and the associated network links) against compromises of their confidentiality, integrity and availability. It involves various types or categories of controls, such as technical, procedural/administrative and physical. Database security is a specialist topic within the broader

  • Disadvantages Of A Database System

    722 Words  | 3 Pages

    02. IMS (Hierarchical model) 1970 to 1972 – E.F codd presented a standard principle for the database his model , the database’s schema or logical, organization is disconnected from physical information storage.  1970 - 2 major data base management system models were created , 01. Ingres – developed by UBC 02. System R – developed by IBM  1980 – Structured Quarry language, or SQL became the standard Quarry language The first commercially available relational data base management system

  • Database Administration Research Paper

    1554 Words  | 7 Pages

    DATABASE SECURITY AND ADMINISTRATION I. Meaning of Database Security and Administration Database Security is the ability that involves protecting, securing and controlling of data stored in the database against an unauthorized access towards data. Database security provides methods that control data stored in the database against outside intrusion and unauthorized. Database Administration is the method of controlling the database so that the database user can access, retrieve, update, delete and

  • Essay On Database Normalization

    844 Words  | 4 Pages

    tables (relations) of a relational database to reduce data redundancy and improve data integrity. It involves arranging attributes in relations based on dependencies between attributes, ensuring that the dependencies are properly enforced by database integrity constraints. The steps to do the normalization: Step 1: Create first normal form (1NF): The database normalization process involves getting data to conform to progressive normal forms, and a higher level of database normalization cannot be achieved

  • Relational Database Case Study

    2344 Words  | 10 Pages

    Relational Database: Databases are generally used to store some data in an organized manner. Hierarchical and Network model are highly used in earlier days. But nowadays relational model is used in order to connect two files which contain common fields. One of the most effective ways of storing data is by using relational database. Edgar codd is a father of relational database, who is an oxford trained mathematician working for IBM in a San Jose laboratory. Basically relational database is an application

  • Factors In Distributed Database Systems

    1568 Words  | 7 Pages

    accessible information in today’s technology environment, the need for distributed databases and client/server applications is also increasing. A distributed database is a single logical database that is spread physically across computers in multiple locations that are connected by data network links. Distributed database is a kind of virtual database whose component parts are physically stored in a number of distinct real databases at a number of distinct locations. The users at any location can access data

  • Disadvantages Of Database Management System

    828 Words  | 4 Pages

    A Database Management System (DBMS) is a software package that comes with computer programs with which we can control the creation, maintenance and use of a database. A database is an integrated collection of data records, files and other objects that are maintained with the help of database administrators and other specialists. DBMS may use variety of data models such as relational model or object model in order to describe and support applications. It supports query languages that are dedicated

  • Database System Advantages And Disadvantages

    907 Words  | 4 Pages

    Advantages of database systems. Introduction Database and Database systems plays a major role in today’s society; as most of our day-to-day activities are related with computer programs which access database. For examples in the field of business, e-commerce, engineering, medicine, law, education and etc. Database is a collection of organized data so that it can be easily accessed, manage and updated. Database Management System(DBMS) is a collection of programs that is enable to control the database. Brief

  • Advantages And Disadvantages Of A Flat File Database

    1389 Words  | 6 Pages

    Flat File Database Definition of a Flat File database A flat file/ flat form database is a system that stores data within a single table. It is known as a flatform database due to it only containing a two dimensional structure (data fields and records). Features: - The database contains data fields which is the name of each piece of data being collected example address meaning that there will be a list of multiple addresses contained within that column. - The database also contains records which

  • Disadvantages Of Database Management System Essay

    1722 Words  | 7 Pages

    Fundamentals of Database Management Systems What is a Database? Database is a collection of data. Mostly the data in the database specially focus on a one organization and have relationship among them. Earlier times those databases were file base databases and not computerized .While using those file base databases many errors occurred and there were many Disadvantages. Nowadays Databases are computerized. What is a Database Management System? (DBMS) DBMS is a Software Designed to assist in maintaining

  • Database Design Advantages And Disadvantages

    844 Words  | 4 Pages

    (a) The major advantages of a database system approach to managing data include improving data sharing for users, improving data security, improving data access and improving data integration while minimizing data inconsistencies. This will lead to improved decision making and productivity. The major disadvantages of a database system approach to managing data include increased costs both initial set-up and ongoing maintenance, management complexity, managing the discipline and procedures to maintain

  • Database Management And Information Retrieval System Assignment

    1462 Words  | 6 Pages

    Assignment 1. 1) Differentiate between database management system and information retrieval system by focusing on their functionalities. There are many functions of database management system and information retrieval system. But, there are differences when focusing on their functionalities. Database management system is a software package that allows data to be effectively stored, retrieved and manipulated, and the data stored in a DBMS package can be accessed by multiple users and by multiple

  • Advantages And Disadvantages Of Distributed Database System

    747 Words  | 3 Pages

    A distributed database is a database in which storage devices are not all attached to a common processor. Portions of the database are stored in multiple physical locations and processing is distributed among multiple database nodes. The data on several computers can be simultaneously accessed and modified using a network. Unlike parallel systems, in which the processors are tightly coupled and constitute a single database system, a distributed database system consists of loosely coupled sites that

  • Advantages And Disadvantages Of Distributed Database Systems

    1085 Words  | 5 Pages

    DISTRIBUTED DATABASES AND DISTRIBUTED DATABASE MANAGEMENT SYSTEMS 1. INTRODUCTION Distributed database systems (SBDD) are two approaches to meeting the data processing which may seem diametrically opposed: technology systems and the database of computer networks. Database systems have evolved from data processing in which each application to define and maintain their own data, to one in which the data are defined and managed centrally. This new orientation leads to independent data, such applications

  • Advantages And Disadvantages Of Database Model

    1387 Words  | 6 Pages

    Chapter 3 Database Model 3.1 LEARNING OBJECTIVE AND OUTCOMES How to organize database model which is required in an application as relations The need of database model is to normalizing relations. The various normal forms are use in the database model. How to normalize the different relations model to next higher normal forms to provide a relational database. 3.2 INTRODUCTION A database model is a type of data model that describes the structure of a database and can be described as a collection

  • Advantages And Disadvantages Of A Database Management System

    1208 Words  | 5 Pages

    DESCRIPTION OF DATABASE MANAGEMENT SYSTEM The database is a collection of some data and number of figures that can be treated to make information. Data represents contain facts. By using the Database Management System we can easily arrange the data in any simple manner. Database Management System will help to store the data where we can easily recover, operate and create information. EVOLUTION OF DATABASE Since, there are several advancement in the electronic industry, it paved the path for computer