Friday, January 18, 2013

Sad (System Analysis & Design) Assignment

1.     Discuss analytical representation of a system. As an abstraction we symbolically represent a system as a simple entity by using a rectangular box as shown in Figure 1. In general, inputs such as stimuli and cues are fed into a system that processes the inputs and produces an output. As a construct, this symbolism is acceptable; however, the words need to more explicitly identify WHAT the system performs. That is, the system must add value to the input in producing an output. We refer to the transformational...

DBMS Assignment Important Ques and answer

    1.    A well-maintained relational DBMS has a high level of data integrity. What features of a relational DBMS contribute towards this level of integrity? Ans- Features of DBMS The following are main features offered by DBMS. Apart from these features different database management systems may offer different features. For instance, Oracle is increasing being fine-tuned to be the database for Internet applications.  This may not be found in other database management systems.  These are the general...

Wednesday, January 16, 2013

FTP Server

FTP Server on RedHat LinuxIt is a file transfer protocol, which is use to transfer the file and receive the file from a Central server up to client, it work at application layer of OSI model and port no. is 20 & 21. port no. 20 is used for connectivity and port no. 21 is used for send & receive data.FTP Important note:-  The configuration file for vsftpd is "/etc/vsftpd/vsftpd.conf"  By default root user can't access ftp server  By default other user can't access ftp server  By default anonymous user can assess ftp...

Thursday, January 10, 2013

Shell Scripting Program

1-. Write a Shell Script that takes a search string and file name from the terminal & displays the results. read a read b word= ‘grep $a $b’ if test ‘echo $word |wc –c’-eq1 then echo “patern not found” else grep $a $b fi output- sh ss1 enter the string to be searched ashs enter the file name ss2 patern not found 2- Write a Shell Script that takes pattern and file name as command line arguments and displays the results appropriately i.e. pattern found/pattern not found. if test $# -ne 2 then echo “Invalid no. of arguments” else word=’grep...