Constraints are used to limit the type of data that can go
into a table.
two basic types of constraints are there
the difference is that column level constraints are apply
only to one column where as table level constraints are
apply to whole table
Constraints are declare at the time of table creation using
CREATE TABLE command
there are 6 constraints used in oracle
if we have a column (Key) in a table.
and values of that column is
and we want to show the data after query..like..
how many times a single term comes..
sql server has its default date format in da form "yy-mm-dd"
its possible to convert da current date format of sql
server to desired format. Now my question is dat how to get
da previous and comin days date in my desired format??