Thx Razzak for the info. I will give a go!

Thx again

Dan

-----Original Message-----
From: rbase-l@googlegroups.com [mailto:rbase-l@googlegroups.com] On Behalf Of 
A. Razzak Memon
Sent: Tuesday, January 9, 2018 2:49 PM
To: rbase-l@googlegroups.com
Subject: Re: [RBASE-L] - delete from child tables

And, here is an example of implementing CASCADE option for table(s) with 
PRIMARY Keys.

See attached screen shot for your viewing pleasure ...

Cascade - Maintains primary/foreign key relationships automatically. 
A CASCADE can be
applied to UPDATE, DELETE, or BOTH data set changes for primary keys. 
For example, if
you either UPDATE or DELETE a primary key value from a table, the corresponding 
foreign key values are updated or deleted automatically. CASCADE can only be 
added to tables with primary keys.

Update - enforces that when a primary key value is updated, the corresponding 
value in the foreign key table(s) will also be updated.

Delete - enforces that when a primary key value is deleted, the corresponding 
value in the foreign key table(s) will also be deleted.

Separate UPDATE and DELETE data restrictions can allow a CASCADE to be enforced 
for values that are updated, but not enforced when records are deleted, in 
order to avoid an accidental or undesired record delete.

Very Best R:egards,

Razzak

--
For group guidelines, visit 
http://www.rbase.com/support/usersgroup_guidelines.php
---
You received this message because you are subscribed to the Google Groups 
"RBASE-L" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbase-l+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

-- 
For group guidelines, visit 
http://www.rbase.com/support/usersgroup_guidelines.php
--- 
You received this message because you are subscribed to the Google Groups 
"RBASE-L" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbase-l+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

Reply via email to