What is the difference between explicit and implicit cursors in Oracle?

Question

I am a bit rusty on my cursor lingo in PL/SQL. Anyone know this?

Answer 1

An explicit cursor is defined as such in a declaration block:

DECLARE 
CURSOR cur IS 
  SELECT columns FROM table WHERE condition;
BEGIN
...

an implicit cursor is implented directly in a code block:

...
BEGIN
   SELECT columns INTO variables FROM table where condition;
END;
...