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njames · Jun 4 '07, 05:26 AM

i have some doubts regarding bash scripting ,

1) i need to display permission of a given file in the following format :

Owner :

Read
Write

Group :

Read
Write

Others :

Read
Execute

so i wrote this code :

Code:

echo -n "Enter Filename : " ; read fname ;

# check if file

...

njames · Jun 4 '07, 05:08 AM

There are two doubts regarding integrity constraints :

1) Can the constraints "NOT NULL" and "DEFAULT" be assigned at table level ? i have tried using the syntax of CHECK constraint at table level,

Code:

 constraint con1 not null (emp_id));

and also the syntax of PRIMARY KEY constraint at table level,

Code:

 not null (emp_id));

i tried same syntax for DEFAULT constraint...

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Questions regarding Bash Scripting.

Integrity Constraints