DBMS or database management systems are computer software applications that interact with other applications and databases in order to store, retrieve and process information. DBMS is an interesting but a complex area of computer science and a number of undergraduate and students are taking it up for specialization. This article takes a comprehensive look at the subject, its history and its application in database management assignment in recent times. If you want database management assignment help, we bet this article will be informative.
What is DBMS?
A data in the field of computing can be a sequence of symbols on the basis of which operations are performed by a computer. Database management assignment experts define database as an organized collection of data. DBMS stands for database management systems. They are computer software applications which interact with other applications, users and databases in order to store, retrieve and process data. The following purposes are applied in database management assignment.
Today, DBMS are used for a variety of purpose:
Online flight reservations
Computerized library systems
Hotel bookings
Store administrative information
Store specialized data such as engineering information, economic models etc.
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Main functional areas of databases
There are four main functional areas of DBMS included in database management assignment. Note these areas carefully if you want to do well in the database management assignment.
Data definition: Creation and removal of definitions that determine the organization of a data.
Data update: Insertion and modification of a given data.
Data retrieval: Providing information in a form directly usable or for further processing by other applications.
Data administration: Registering and monitoring users, data security, maintain data integrity and recovering information after a sudden failure.
History of DBMS
Development of database technology has taken place over the years and can be divided into three broad areas. Database management assignment highlights the following:
Navigational (1960s)
SQL/Relational (1970s- 1990s)
Post-relational (2000 onwards)
1960s: From the 1960s, the availability of the direct access storage (disks and drums) led to the introduction of databases. IDS was one such early network databases developed by the computer division of General Electric. Another database was IMS developed by IBM. These were navigational databases. They used the navigational approach in which navigation was used as a technique to find information. Get database management assignment help at an unmatchable rate!
1970s-1990s: 1970s saw the rise of relational databases. A relational database uses relational model of data analysis i.e. it divides information into several tables with rows and columns each with its own unique key. Since all the rows have their unique keys, information of a row can be linked to the information of another row simply by the virtue of these keys. The relational model of databases was first proposed by E.F. Codd in 1970. IBM started working on a new database based on Codd’s code. It came to be known as SQL/DS or Database Another important database to develop was Oracle in 1978. 1980s saw the coming of desktop computing. New databases like Dbase and Lotus 1-2-3 were used. Dbase was the top selling computer software in the 1990s. Get fastest database management assignment help from MyAssignmenthelp.com!
2000s: The next generation of databases used post-relational database model. These new databases are perfect for new age computers. They are fast and efficient and do not require fixed table schemes. Important examples included in database management assignment are NoSQL and NewSQL.
Role of a database administrator
A database administrator has a number of functions related to database management. Database management assignment experts highlight the summarization under the following heads:
Database design
Database designing refers to the process of producing a detailed model of a database. The design processes involved in database management assignment are:
Gathering all the information
Dividing the information into tables
Dividing the tables into rows
Specifying the primary keys and
Setting up table relationships.
Database languages
Database management assignment include three types of Database languages:
Data definition language which defines data types and the relationships among them
Data manipulation language which performs tasks such as updating etc
Query language which allows search for information.
Data storage
Database management assignment experts analyze it as the container of the physical materialization of the data. It consists of the internal level or physical level of database and the external or the conceptual level of storing data.
Data replication
Data replication refers to the sharing of information so as to ensure consistency between redundant sources. Database management assignment emphasizes on replication.
Database security
Database security deals with the protection of database from intentional authorized database use to unauthorized database uses. Database management assignment gives importance to this.
Database backup
Sometimes it is required to bring back data after a software error. This is important in database management assignment.
DBMS Studies in Australia, UK, USA
DBMS is now an independent and a legitimate academic field within the broad field of computer science. Database management assignment is an inevitable task for students.
Computer science and database management assignment deal with the various theories and designs of computational systems.
Application of computational theories in database management assignment may be divided into areas of artificial intelligence, computer architecture and engineering, computer graphics, computer security, computer networks and databases.
In DBMS studies and database management assignment, students learn about different database models and different query languages. Universities in Australia, UK and USA teach computer science either as a theoretical study of computing or as an algorithmic reasoning. Vocational training programs and database management assignment are part of curriculum.
While the central focus of computer education is computer programming or software engineering, the importance of the study of computer graphics, systems databases etc has increased in equal measures. As such it is important to have an idea of the kind of sample database management assignment.
Sample database management assignment
Students needing database management assignment may face the hardest challenge in doing samples. Here is a typical database management assignment case study:
Sydney hospital is a multispecialty hospital with various departments, specialty clinics, doctors etc where a lot of patients come to get treated. Develop a DBMS for this hospital that keeps a record of all the cases.
Description: The hospital has a number of departments and doctors. There are two types of doctors: regular and on call. When a patient arrives at the hospital, he makes an entry. After check up, the patient is either discharged or admitted. Admitted patients have to fulfill a number of obligations like choosing a room type and a paying for the room. Admitted patients may be of two types: operated and discharged.
Tables: The following are the tables used in the hospital database:
DEPARTMENT: Names of various departments
ALL_DOCTORS: Names of all doctors. Each doctor is given an unique identity number
DOC_REG: List of regular doctors.
DOC_ON_CALL: List of doctors on call
PAT_ENTRY: Names of patients along with personal details
PAT_CHECK UP: Names of patients checked by doctors
PAT_ADMIT: Names of patients admitted
PAT_DIS: Names of patient’s discharged
PAT_OP: Names of patient’s operated
ROOM_DTLS: Details of rooms along with prices
Database Diagram
The relational database schema for Sydney hospital:
DEPARTMENT (ALL-DOCTORS)
All_DOCTORS (DOC_CALL, DOC_REG)
PAT_ENTRY (PAT_ADMIT, PAT_CHECK UP)
PAT_ADMIT (PAT_OP, PAT_DIS)
ROOM_DTLS (PAT_ADMIT, PAT_OP)
What are the major challenges which students face while writing a database management assignments?
Educational institutions in Australia, UK and USA, as noted before, give more importance to computer programming or software engineering that is often treated as the master subject from which all other computer application subjects like databases, computer graphics, languages, operational systems are derived. As such K-12 education system in countries like USA does not concentrate on computer application as a separate subject of enquiry. Once in colleges and universities, computer science students face a number of difficulties. Difficulties encounter while preparing database management assignment are:
General
These are the problems which can be faced by any students while composing their database management assignment irrespective of his disciplinary boundary. They are:
Deadlines
A student’s worst nightmare, database management assignment deadlines are however important if you want to do well.
English language expertise: Even when students know their subjects very well, they often have problem to present that in your database management assignment in a coherent manner. Also the accent of foreign teachers might be a problem for students from non-English speaking countries.
Disciplinary
There are challenges which are peculiar to computer science students, especially while framing their database management assignment. They are:
Lack of conceptual clarity: DBMS studies and database management assignment require a good understanding of computing theories and their practical applications. Since these theories are extremely obscure students will have tough time in learning applications in database management assignment if basics are not strong.
Difficulty of the subject: DBMS is relatively difficult than other areas of computer applications. As such database management assignment help can go a long way to remove the impediments faced by students.
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