Explain the components of database system in details., Database Management System

Assignment Help:

Explain the components of Database System in details.

Related Discussions:- Explain the components of database system in details.

Correlated and uncorrelated queries, need to get answer for questions 3&4 o...

need to get answer for questions 3&4 on this page in part 1

Explain entity integrity and referential integrity rules, Explain entity in...

Explain entity integrity and referential integrity rules within relational model. Show how these are realized in SQL? Entity Integrity Rule - No primary key value could be nu

Union - basic set operation, UNION If R1 and R2 are two union compatibl...

UNION If R1 and R2 are two union compatible relations then R3 = R1 ∪ R2 is the relation having tuples that are either in R1 or in R2 or in both. In case, R3 will have tuples

Give the limitations of sql authorization, Give the limitations of SQL auth...

Give the limitations of SQL authorization. The code for checking authorization becomes intermixed with the rest of the application code. Implementing authorization by applic

Write expressions in relational algebra, Given the subsequent relations: ...

Given the subsequent relations: vehicle (reg_no, make, colour) Person (eno, name, address) Owner (eno, reg_no) Write expressions

Keys, it can be possible to create any table without primary key

it can be possible to create any table without primary key

Describe the functions and features of foreign key, Describe the functions ...

Describe the functions and features of foreign key? Foreign Key : The primary key of one file or table that is implanted in another file or table to implement the relationships

Define ssn of salesman by using database of business trips, Consider the su...

Consider the subsequent relations for a database which keeps track of business trips of salespersons in a sales office: SALESPERSON (SSN, Name, start_year, Dept_no) TRIP (SSN, Fr

Give an example of enforcement in typing, Give an example of enforcement in...

Give an example of enforcement in Typing. You can understand the idea of enforcement as it makes sure objects of dissimilar classes may not be interchanged as below: Exampl

Explain hash file organization, Explain hash file organization? Hash fu...

Explain hash file organization? Hash functions a) The distribution is uniform Hash functions assign each bucket the similar number of search -key values from the set of a

12/5/2013 4:25:50 AM A complete database system in an organization contains four *components*. a() Hardware: The hardware is a set of physical devices on which a database resides. It consists of one or additional computers, disk drives, CRT terminals, printers, tape drivers, connecting cables and so on. The computers used for processing the data in database may be mainframe, mini computers and personal computers. Mainframe and mini computers have usually been used on a stand-alone basis to support multiple users accessing a ordinary database. Personal computers are regularly used with stand-alone databases controlled and accessed by single user. Disk drivers are the key storage mechanism for databases. Desktop computers, CRT terminals and printers are used for entering and retrieving information from database. The success of database system has been a lot dependent on advances in hardware technology. A very large quantity of main memory and disk storage is necessary to keep and control a huge quantity of data stored in database. b() Software: A database system includes two kinds of software: 1()General Purpose database management software typically known as database management system (DBMS). 2()Application software that uses DBMS facilities to control the database to attain a specific business functions. Application software is normally written by programmers to solve specific company problem. It may be written in languages like COBOL or C or it may be written in a language supplied by DBMS like SQL. Application software utilizes the facilities of DBMS to way in and manipulate data in the database providing reports or documents needed for the information and processing needs of the company. The DBMS is system software alike to an operating system. It provides a lot of services to end users and programmers. DBMS usually provides most of the following services. a.1.) a central data definition and data control facility known as a data dictionary/directory or catalogue. b.2.) Data security and integrity mechanisms. c.3.) Concurrent data access for multiple users. d.4.) User-oriented data query, manipulation and reporting capabilities. e.5.) Programmer-oriented application system development capabilities.

12/5/2013 4:25:50 AM

A complete database system in an organization contains four components.

a() Hardware: The hardware is a set of physical devices on which a database resides. It consists of one or additional computers, disk drives, CRT terminals, printers, tape drivers, connecting cables and so on.

The computers used for processing the data in database may be mainframe, mini computers and personal computers. Mainframe and mini computers have usually been used on a stand-alone basis to support multiple users accessing a ordinary database. Personal computers are regularly used with stand-alone databases controlled and accessed by single user.
Disk drivers are the key storage mechanism for databases. Desktop computers, CRT terminals and printers are used for entering and retrieving information from database.

The success of database system has been a lot dependent on advances in hardware technology. A very large quantity of main memory and disk storage is necessary to keep and control a huge quantity of data stored in database.

b() Software: A database system includes two kinds of software:

1()General Purpose database management software typically known as database management system (DBMS).

2()Application software that uses DBMS facilities to control the database to attain a specific business functions.

Application software is normally written by programmers to solve specific company problem. It may be written in languages like COBOL or C or it may be written in a language supplied by DBMS like SQL. Application software utilizes the facilities of DBMS to way in and manipulate data in the database providing reports or documents needed for the information and processing needs of the company.

The DBMS is system software alike to an operating system. It provides a lot of services to end users and programmers.

DBMS usually provides most of the following services.

a.1.) a central data definition and data control facility known as a data dictionary/directory or catalogue.
b.2.) Data security and integrity mechanisms.
c.3.) Concurrent data access for multiple users.
d.4.) User-oriented data query, manipulation and reporting capabilities.
e.5.) Programmer-oriented application system development capabilities.

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages