Question: PL/SQL, how would you trap and report on errors (Oracle specific)? Define a primary key constraint on a table? What is a database trigger? How

PL/SQL, how would you trap and report on errors (Oracle specific)?

Define a primary key constraint on a table?

What is a database trigger?
How will you use the Coalesce function and the nvl functions (Oracle specific)?

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In PLSQL you can trap and report errors using exception handling constructs like BEGINEXCEPTIONEND Oracle provides a set of predefined exceptions that ... View full answer

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