This block contains the inode for every file of the file system along with all the file attributes except its name.
We can use isql utility that comes with open client driver as follows: isql –S serverName –U username –P password
Shell is a interface between user and the kernel. Even though there can be only one kernel ; a system can have many shell running simultaneously . Whenever a user enters a command through keyboard the shell communicates with the kernel to execute it and then display the output to the user.