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DATABASE

A shared collection oflogically related data a description of this data designed to meet the

information needs of anorganization

DBMS

A software system thatenables users to define

create maintain control access to the

database

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HARDWARE

Refers to all the systems

physical devices through:

Microcomputer

Minicomputer

Mainframe computer

Includes all computer

peripherals which are

physical devices that

control computer input

and output such as:

Keyboards

Mice

Modems

printers

Includes devices that used toconnect two or more

computers to producing a

computer network

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SOFTWARE

Collection ofprograms used

Within thedatabasesystem

OPERATING SYSTEMSOFTWARE

* Manages all hardwarecomponents

* Makes it possible for allother software to run onthe computers

EXP: MacOS,MICROSOFTXP/ LINUX

DBMS SOFTWARE

Manages thedatabase withindatabase system

EXP: MicrosoftAccess and SQLServer, OracleCorporationsOracle

APPLICATION PROGRAMS ANDUTILITY SOFTWARE

Access and manipulate data Manage computer environment Generate reports, tabulations

and other information tofacilitate decision making

UTILITY = software tools usedto help manage the databasesystem computers components

EXP UTILITY: GUI interfaces

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Includes all users of the database system.

Types of users

in database system

System

administrators

Database

administrators /DBAsEnd user

Database

designersSystems analystsand programmers

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System administrators

oversee the database systems general operations.

Database administrators /DBAs

manage the DBMSs use.

ensure that the database is functioning properly.

Database designers

design the database structure.

Systems analysts and programmers

design

implement

End user

use the application programs.

the application programs

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PRO EDURES Means by the instructions and rules that

should be followed and applied to the

design and use of the database system.

Used for

(1) enforcement of standardization

(2) well-organized method to monitorand audit data

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Basic procedures involved:

LogonRun some programs

Start and stop the DBMS

Backup

Failure handling

Changes on the data structures or

physical storage

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DATA

Can be defined as:

(1) the raw material from which

information generated

(2) covers the collection of facts stored

in database

(3) used by the organization and adescription of this data called the

schema

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In library, operational data for systemcatalog such as:

Names, types, sizes of data items

Relationships

Integrity constraints on the data

Names of authorized users

Types of indexes and storage structures

Usage statistics

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THANKSFOR

LENDINGUS YOUREARS.