Database Management System Essay

2000 words - 8 pages



Data: Facts, figures, statistics etc. having no particular meaning (e.g. 1, ABC, 19 etc).

Record: Collection of related data items, e.g. in the above example the three data items had no meaning

What is a Database?

A collection of related pieces of data:

Representing/capturing the information about a real-world enterprise or part of an enterprise.

Collected and maintained to serve specific data management needs of the enterprise

Activities of the enterprise are supported by the database and continually update the database


University Database: Data about students, faculty, courses, research-laboratories, course registration/enrollment etc.

Reflects the state of affairs of the academic aspects ofthe university.

Purpose: To keep an accurate track of the academic activities of the university.


A general purpose software system enabling:

Creation of large disk-resident databases.

Posing of data retrieval queries in a standard manner.

Retrieval of query results efficiently.

Concurrent use of the system by a large number of users in a consistent manner.

Guaranteed availability of data irrespective of system failures.


•Files of records -used for data storage

•data redundancy -wastage of space

•maintaining consistency becomes difficult

•Record structures -hard coded into the programs

•structure modifications -hard to perform

•Each different data access request (a query)

•performed by a separate program

•difficult to anticipate all such requests

•Creating the system

•requires a lot of effort

•Managing concurrent access and failure recovery are difficult



•separation of data and metadata

•flexibility of changing metadata

•program-data independence

Data access language

•standardized SQL

•ad-hoc query formulation -easy

System development

•less effort required

•concentration on logical level design is enough

•components to organize data storageprocess queries, manage concurrent access, recovery from failures, manage access control are all available


Collection of conceptual tools to describe the database at a certain level of abstraction.

Conceptual Data Model

high level description

useful for requirements understanding.

Representational Data Model

describing the logical representation of datawithout giving details of physical representation.\

Physical Data Model

description giving details about record formats,file structures etc.


A relation is a data structure which consists of a heading and an unordered set of tuples which share the same type.

A relation has zero or more tuples.

A relation value is an instance of a relation.

A relation variable (relvar) is a variable which has a relation value.

In SQL, a database language for relational...

Find Another Essay On Database Management System

Oracle Databases Rational Database Management System

598 words - 2 pages comprise one or more data blocks, where the block size can vary between data files. Oracle database management tracks its computer data storage with the help of information stored in the SYSTEM tablespace. The SYSTEM tablespace contains the data dictionary and often by default indexes and clusters. A data dictionary consists of a special collection of tables that contains information about all user objects in the database. This tablespace

Differentiate between database management system and information retrieval system by focusing on their functionalities

680 words - 3 pages Differentiate between database management system and information retrieval system by focusing on their functionalities. Database Management System is a database program. It is software designed to assist in maintaining and using the collection of data, and the need for the system, and also use them, is growing rapidly. DBMS contains information about a particular enterprise and provides an environment that is both convenient and efficient to

1. Differentiate between database management system and information retrieval system by focusing on their functionalities

686 words - 3 pages Database management system (DBMS) is a collection of interrelated data and a set of programs to access the data. The collection of data, usually referred to as a database, contains the information related to the Company, the company's system at workplace, detailed information as an example employee personal information stored in the data. The goal of a database management system is to provide a way how to store and retrieve data information more

Differentiate between database management system and information retrieval system by focusing on their functionalities.

764 words - 4 pages communication that can be as information if we able to clarify and differentiate the information based from all those thing through their perception. Make appropriate use of diagrams to illustrate the underlying concepts/components of database management system and information retrieval system Works Cited

Database Management System Diagram

592 words - 3 pages  Database program that is a software system that store the database information. It organizes, manages incoming data and provides ways for the data to be modified or extracted by users or other programs.  Is a device interposed between a potential user of information and information collection itself for a given information problem, the purpose of the system is to capture wanted items and to filter out unwanted items.  Structured data

Huffman Trucking Company: Database Management System - Request for Proposal: Description of Team Red Consulting, Inc

1005 words - 4 pages termination.TRCI afforded the opportunity to propose an enterprise investigation and feasibility study on the development of database management system for the Huffman Trucking Company (HTC), per their service request SR-ht-002. The database is designed for the transportation department, specifically their vehicle maintenance scheduling system.The TRCI members that will complete HTC's service request SR-ht-002 are the following:- Project Manager: Laine

database managment system

1433 words - 6 pages What are the advantage of DBMS over Conventional file system. ExplainADVANTAGES OF DBMS The DBMS (Database Management System) is preferred ever the conventional file processing system due to the following advantages: 1. Controlling Data Redundancy - In the conventional file processing system, every user group maintains its own files for handling its data files. This may lead to following: • Duplication of same data in different files. &bull

Database, data handling, how to create a database system

9426 words - 38 pages - 42Relationships Page 43Reports Pages 44 - 52Processes Pages 53 - 57Forms Pages 58 - 62Sub-Tasks Pages 63 - 64Testing Pages 65 - 67Evaluation Pages 68 - 75Improvements Pages 69 - 71Evaluation Criteria Pages 71 - 73Objective Based Evaluation Page 74Possible Improvements Page 74Time Management Page 75Standard Ways of Working Pages 76 - 771. INTRODUCTIONThis is a database I created, it shows the steps taken to make the database user friendly and to meet

Riordan Manufacturing Business-To-Business Database System

5480 words - 22 pages AbstractRiordan Manufacturing is seeking a database system to facilitate web-based communication between employees and vendors to increase the efficiency of the materials purchasing process. Preliminary design estimates indicate that the application will include functions for current inventory management, automated and manual ordering, and order status tracking. The users of the database and website will include specified vendors, purchasing

Database System Analysis

895 words - 4 pages Whether we are aware of it or not, database systems play an extensive role in our everyday lives. From a user profile on a simple website to a corporate payroll system, the data we take for granted is stored on machines using database software packages. There are several different types and styles of databases ranging from the more complex systems (like Oracle and Microsoft SQL server) to less complicated or personal databases (like Microsoft

Difference Between Database System and Information Retrieval System

626 words - 3 pages Information Retrieval is simply a field concerned with organizing information. In other terms, IR is emphasizing the range of different materials that need to be searched. Others researcher said that IR is the contrast between the strong structure and typing a database system with the lack of structure in the objects typically searched in IR. The actual process in information retrieval systems is it has to deal with incomplete or under specified

Similar Essays

Database Management System Essay

1387 words - 6 pages Differentiate between database management system and information retrieval system by focusing on their functionalities. Answer Database Management System A database management system (DBMS) is the main software tools of the database management approach because it controls the creation, maintenance and use of the databases of an organization and its end users. There are several functions that a DBMS performs to ensure data integrity and

Relational Database Management System Essay

1093 words - 4 pages Relational Database Management System Oracle provides a flexible RDBMS called Oracle7. Using its features, you can store and manage data with all the advantages of a relational structure plus PL/SQL, an engine that provides you with the ability to store and execute program units. The server offers the options of retrieving data based on optimization techniques. It includes security features that control how a database is accessed and used

Database Management System And Information Retrieval System

1196 words - 5 pages Differentiate between database management system and information retrieval system by focusing on their functionalities. A database management system in the main software tool of the database management approach because it controls the creation, maintenance, and use of the database of an organization and its users. The three major functions of a database management system are first to create new database and database application. Second to

Database Management System And Retrieval Information System

2036 words - 8 pages Database is a collection of programs that enables users to create and maintain data. The other meaning, database some collection the related files that are usually included, concurrent referenced to one another. Good feature of a database is that data and records contains some in different files can be easily organized and save from harm in danger when using specialized database management software called a database management system (DBMS) or