Hi all;

Is it possible to write a trigger or the ilk that would disallow 
direct inserts, updates, or deletes to a table unless it was 
being executed through a function?  How can I identify that the 
DML being issued is being done via a function?

We are writing an API of sorts and for various business logic 
aspects, it is necessary that certain checks and sets of data 
are processed through the database in a certain method.  The use 
of functions provides the ability to do this, but I would 
definitely like to restrict access to the under lying tables.

If I revoke insert,update,delete privileges on a table, would 
the user still be able to affect data manipulation through a 
function?  Is that another way of getting around this?

TIA

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