(B13) Middleware part2 Web Server, Application server, Database , JDBC
20220309 171127
Web Server
Application
Backend - Database Server
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Web Server
-provide web service to client
-http or https(http over SSL) protocol
-client send request to web server
and server send responce to client with web page from web content
request
responce
-if web server not found data/page as client requested , server send
responce as like "404 error" or "Page not found"
-url
-responce in the form of html
-html -hyper text markup language
ex. html pages: page.html or page .htm
web server returns a responce in .html page , .php page, .jsp page, .asp..
but format is html only
Client side : HTML,CSS,JavaScript
you can run in your web browser
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type of web sites:
Static Web Site
-Web Server has pages in web content , client access existing pages only
--no data upload/download/query
Dynamic Web Site
-Web Server recive a request , the request forward to application
-the application access database server for required data
-and create a responce page to client send to web server
-web server send responce to client
Web Server:
Static websites;
Microsoft: Web Server -IIS (Internet Information Service)
Apache httpd server
Dynamic websites:
-webserver
-application
-application server
-database server
-api,gateway
Application:
-Java Servlets
-JSP - Java Server Page
-EJB -enterprise java beans - enterprise application
-Applet
-Python -dijango, flask
-php
-
Application Server
Tomcat - java servlet,jsp
GlassFish
PHP server
Middle server for enterprise Application(EJB)
Oracle Weblogic
IBM WebSpare
Redhat Wildfly(JBOSS)
---
application server also has web server in it.
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Database Server:
Oracle DB
MySql
MeriaDB
DB2
IDE: integrate development environment
Eclipe
Apache NetBeans
Visual Studio
pycharm
Atom
..
sublime text
--
JDBC - java database connecter
-to connect java application to database server(mysql, oracle db)
we use JDBC
Java™ database connectivity (JDBC) is the JavaSoft specification of
a standard application programming interface (API) that allows Java
programs to access database management systems. The JDBC API consists
of a set of interfaces and classes written in the Java programming
language.
ODBC
Connection/j
-python to mysql : mysql.connector
-
list of
webserver
application
database
middleware
api
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