Compare and contrast, SSL and TLS, MCS51-dec2007-1(g)

SSL	TLS
SSL stands for Secure Sockets Layer.	TLS stands for Transport Layer Security.
Netscape originally developed this protocol.	The Internet Engineering Task Force (IETF) created TLS as the successor to SSL.TLS as the successor to SSL.
SSL works mainly through using public/private key encryption on data.	TLS uses stronger encryption algorithms and has the ability to work on different ports
It is commonly used on web browsers	It is most often used as a setting in email programs
SSL connections begin with security and proceed directly to secured communications	TLS connections first begin with an insecure “hello” to the server and only switch to secured communications after the handshake between the client and the server is successful

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Using HyperSQL (HSQLDB)

HSQLDB is a portable RDBMS implemented in pure java. It can be embedded with your application as well as can be used separately. It is very a small database that supports almost all features of the standard database system. It comes with small jar file that can be found in lib folder. The HSQLDB jar package is located in the /lib directory of the ZIP package and contains several components and programs. Core components of jar file are : HyperSQL RDBMS Engine (HSQLDB), HyperSQL JDBC Driver, Database Manager, and Sql Tool. Installing and Using Download: download latest release of HyperSQL database from http://hsqldb.org website and extract it. You will see following contents. Here "bin" directory contains some batch files those can be used to run a swing based GUI tool. You can use runManagerSwing.bat to connect to database, but database must be on before running it. Directory lib contains File hsqldb.jar . It is the database to be used by you. Running database First

In Process Mode of HSQLDB in web application.

If you want to use the database into your web application, you can use the HSQLDB in In_Process mode. In this mode, you can embed the HSQLDB into your web application and it runs as a part of your web application programm in the same JVM. In this mode, the database does not open any port to connect to the application on the hosing machine and you don't need to configure anything to access it. Database is not expposed to other application and can not be accessed from any dabase tools like dbVisualizer etc. In this mode ,database will be unknown from any other person except you. But in the 1.8.0 version, you can use Server intance for external as well as in process access. To close the databse, you can issue SHUTDOWN command as an SQL query. In the in-process mode, database starts from JDBC with the associated databse file provided through connection URL. for example DriverManager.getConnection("jdbc:hsqldb:mydatabase","SA",""); Here myd

Write a code for servlet which will display all the fields of Employee table in tabular form.MCS-051,Dec09-3a

import javax.servlet.*; import java.io.*; import java.sql.*; import javax.servlet.http.*; public class Employee extends HttpServlet { public void doGet(HttpServletRequest req, HttpServletResponse res) throws IOException, ServletException { res.setContentType("text/Html"); PrintWriter pw = res.getWriter(); try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); Connection con=DriverManager.getConnection("jdbc:odbc:dsn"); Statement st=con.createStatement(); ResultSet rs=st.executeQuery("select emp_id,emp_name,emp_dob,mob_no,email from employee"); String tr=""; while(rs.next()){ tr=tr+"<tr>"; tr=tr+"<td>"+rs.getString(1)+"</td>"; tr=tr+"<td>"+rs.getString(2)+"</td>"; tr=tr+"<td>"+rs.getString(3)+"</td>"; tr=tr+"<td>"+rs.getString(4)+"</td>&

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