The stored procedures in 'pl.sql' were written by our team. PL/SQL syntax, formatting, and structure was adapted from: Week 8 Exploration "Implementing CUD operations in your app" The ...

When you use SELECT in a PL/SQL block, it’s important to make sure that exactly one row will always be returned by your query. If more than one row is returned, the TOO_MANY_ROWS exception occurs.