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Disadvantages of database management system
Disadvantages of database management system
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Question 1.
Differentiate between database management system and information retrieval system by focusing on their functionalities.
Database Management System (as known as DBMS) is a set of application that enable user to create, edit, update, store and retrieve data from database files. By using DBMS, data in a database can be added, deleted, changed, sorted and searched. DBMSs are usually used to manage employee information of a big company, customer information and stock information.
By using the DBMS, there are advantages and disadvantages. The advantages of a DBMS is the same information can be available to any user, minimizing redundancy can reduce the cost of storing information on other devices, the accuracy in using DBMS because of their up to date data and data is easy to access. The disadvantages of DBMS is implementing this system can be high cost and time consuming, even the training.
When we mentioned about the functionalities of DBMS, there are four main components. The four components are data, hardware, software and user. The data is something plain, raw, unorganized facts that needs to be processed to be meaningful. Hardware is physical component of the computer system and also known as peripheral. Software is application inside the computer. Lastly, the user is the one who clearly understand what it means to use the system on a daily basis.
There are a number of functions that a typical DBMS will support.
• Data Definition Language as known as DDL – to define a database. The DBMS must allow users to create database definitions
• Data Manipulation Language as known as DML – to insert, update, delete, and query data in the database.
• Concurrency control that is allows shared access to the database, with multip...
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...t, then the result will fast.
Works Cited
1. Joey F. George et.al. 2004 Object-Oriented System Analysis and Design 2d ed. Pearson International Edition :Pg144
2. Raghu Ramakrishnan & Johannes Gehrke 2003 Database Management System 3d ed. McGraw-Hill Higher Education : pg9.
3. Patricia Ward & George Dafoulas 2006 Database Management Systems Thomson : pg4&5
4. Ralph M. Stair & George W. Reynolds 2006 Principles of Information Systems, A Managerial Approach, 7th ed Thomson : pg5&7
5. Ramez Elmasri & Shamkant B. Navethe 1989 Fundamentals of Database Systems 6th ed Pearson : pg1000
6. http://www.personal.psu.edu/glh10/ist110/topic/topic07/topic07_05.html
7. http://smithaprahlad.blogspot.com/2006/05/distinguih-between-irs-and-dbms.html?m=1
8. http://www.ask.com/question/what-is-different-between-data-and-information
9. http://en.m.wikipedia.org/wiki/Unstuctured_data
problem and it will be used in this case to build the databases. The databases
A database management system, or DBMS, gives the user access to their data and helps them transform the data into information. Such database management systems include dBase, Paradox, IMS, and Oracle. These systems allow users to create, update, and extract information from their databases. Compared to a manual filing system, the biggest advantages to a computerized database system are speed, accuracy, and accessibility.
In 1977, Larry Ellison, Bob Miner, and Ed Oates founded System Development Laboratories. After being inspired by a research paper written in 1970 by an IBM researcher titled “A Relational Model of Data for Large Shared Data Banks” they decided to build a new type of database called a relational database system. The original project on the relational database system was for the government (Central Intelligence Agency) and was dubbed ‘Oracle.’ They thought this would be appropriate because the meaning of Oracle is source of wisdom.
This section provides an overview and a brief description of the system design. The system structure, the database design, and the user interface
PL/SQL is extension to SQL which was originally developed by IBM for operations on relational databases. PL/SQL is a structured language which is used in manipulating the data with the help of commands like SELECT, INSERT, CREATE AND GRANT.
Depending upon what they do, SQL Commands are divided into four categories: DDL (Data Definition Language), commands such as CREATE is used to define the data. DML (Data Manipulation Language), commands such are INSERT and DELETE are used to manipulate data. DCL (Data Control Language), commands such is GRANT is used to control access to data.
[7] Elmasri & Navathe. Fundamentals of database systems, 4th edition. Addison-Wesley, Redwood City, CA. 2004.
- Williams, L.T, 1997, “Planning and managing the information system - a manager's guide”, Industrial Management & Data Systems Volume 97 Number 5 1997 pp. 187-191
Like most complex systems, a management information system (MIS) can be described in a number of different ways;-
A number of recent studies have revealed that most enterprise customers nowadays prefer open source databases over commercial databases. Based on their requirements, the enterprises also have option to choose from a number of open source relational database management systems (RDBMS) including MySQL, MangoDB, Cassandra, Redis and PostgreSQL.
Databases are becoming as common in the workplace as the stapler. Businesses use databases to keep track of payroll, vacations, inventory, and a multitude of other taske of which are to vast to mention here. Basically businesses use databases anytime a large amount of data must be stored in such a manor that it can easily be searched, categorized and recalled in different means that can be easily read and understood by the end user. Databases are used extensively where I work. In fact, since Hyperion Solutions is a database and financial intelligence software developing company we produce one. To keep the material within scope I shall narrow the use of databases down to what we use just in the Orlando office of Hyperion Solutions alone.
Almost all commercial database systems available today are designed to provide a high level of performance to its users. Nonetheless, Database Performance Tuning for large volumes of data is an arduous task. Even minor changes can bring about a substantial impact (positive or negative) on the performance of the system (KOCH, 2014).
Laudon C. & J. Laudon (2003: 5th edition) Essentials of Management Information Systems. London: Prentice Hall International Limited
The Database Management System (DBMS) is software that enables the users to define, create, maintain and control the access to the database. It is a software that interact with the user’s applications programs and it database. Meanwhile, information retrieval system is a system that involved the activity that the systems obtain the information. The obtaining information action need the information from it resources.
In our world, people rely heavily on the power of technology every day. Kids are learning how to operate an iPad before they can even say their first word. School assignments have become virtual, making it possible to do anywhere in the world. We can receive information from across the world in less than a second with the touch of a button. Technology is a big part of our lives, and without it life just becomes a lot harder. Just like our phones have such an importance to us in our daily lives, database management systems are the same for businesses. Without this important software, it would be almost impossible for companies to complete simple daily tasks with such ease.