Minimize all windows in windows 7

Please note: These tips apply primarily to Windows 7

Minimize all windows (except the one that you’re working on).  
When your desktop becomes so cluttered that you
can’t find anything, this step is a good way to regain focus. Grab the title bar of the 
window you want, and shake your mouse a little. All other windows will vanish into 
the task-bar. Repeat to undo and restore all of your hidden windows.

change field data type into existing table in sql

change field data type into existing table in sql

alter table student
modify(stdAddress varchar2(50));

insert field into existing table in SQL

insert field into existing table in SQL
here table name is student
---------------------------------------

alter table student
add(stdAddress varchar2(25));

insert values into a table

insert values into a table
here student is table name

insert into student
values(01,'ABC','XII');