Intro to servers

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1 Server types Server types & & Database Database

description

Information Technology

Transcript of Intro to servers

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Server typesServer types& &

DatabaseDatabase

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Server TypesServer Types

Application Servers – also known as Middleware handles all application operations between users and a database

Audio/Video Servers –Enable Websites to broadcast streaming and multimedia content

Chat Servers – enable a large number of users to exchange information in an environment similar to Internet newsgroups that offer real-time discussion

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Server Types (cont.)Server Types (cont.)

Database Servers – server that performs tasks such as data analysis and storage

Fax Servers –Enables network to control incoming and outgoing telephone resources

Groupware Servers – enables users to use the internet or intranet to collaborate regardless of location in a virtual atmosphere

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Server Types (cont.)Server Types (cont.)

IRC Servers – Internet Relay Chat enables real-time discussion capabilities

List Servers – offers a better way to manage mailing lists, whether they be interactive discussions open to the public or one-way lists that deliver announcements, newsletters, or advertising

Mail Servers – move and store mail over corporate networks and across the Internet

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Server Types (cont.)Server Types (cont.) Name Servers – also known as DNS servers—

map the human-readable names to the IP addresses

News Servers – distribution and delivery source for the thousands of public news groups accessible over the USENET news network

Telnet Servers – allows users to log on to a host computer and perform tasks as if they’re working on the remote computer itself

Print Server- shares and maintains network printers, can join the domain server.

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DATABASE: : ORGANIZED COLLECTION OF LOGICALLY RELATED DATADATA: : STORED REPRESENTATIONS OF MEANINGFUL OBJECTS AND EVENTSSTRUCTURED: : NUMBERS, TEXT, DATESUNSTRUCTURED: : IMAGES, VIDEO, DOCUMENTSINFORMATION: : DATA PROCESSED TO INCREASE KNOWLEDGE IN THE PERSON USING THE DATAMETADATA: : DATA THAT DESCRIBES THE PROPERTIES AND CONTEXT OF USER DATA

Definitions

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A SOFTWARE SYSTEM THAT IS USED TO CREATE, MAINTAIN, AND PROVIDE CONTROLLED ACCESS TO USER DATABASESADVANTAGES OF THE DATABASE APPROACHADVANTAGES OF THE DATABASE APPROACH1..PROGRAM-DATA INDEPENDENCE2.PLANNED DATA REDUNDANCY3.IMPROVED DATA CONSISTENCY4.IMPROVED DATA SHARING5.INCREASED APPLICATION DEVELOPMENT 6.PRODUCTIVITY7.ENFORCEMENT OF STANDARDS8.IMPROVED DATA QUALITY9.IMPROVED DATA ACCESSIBILITY AND RESPONSIVENESS10.REDUCED PROGRAM MAINTENANCE11.IMPROVED DECISION SUPPORT

Database Management System

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Costs and Risks of the Database Approach

1.New, specialized personnel2.Installation and management cost and complexity3.Conversion costs4.Need for explicit backup and recovery5.Organizational conflict

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Components of the Database Environment

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Components of the Database Environment

1.CASE Tools–computer-aided software engineering

2.Repository–centralized storehouse of metadata

3.Database Management System (DBMS) –software for managing the database

4.Database–storehouse of the data5.Application Programs–software using the

data6.User Interface–text and graphical displays to

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7.DATA/DATABASE ADMINISTRATORS–PERSONNEL RESPONSIBLE FOR MAINTAINING THE DATABASE

8.SYSTEM DEVELOPERS–PERSONNEL RESPONSIBLE FOR DESIGNING DATABASES AND SOFTWARE9.END USERS–PEOPLE WHO USE THE APPLICATIONS AND DATABASES

Components of the Database Environment

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The Range of Database Applications

Personal databasesWorkgroup databasesDepartmental/divisional databasesEnterprise database

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