Difference between Implicit and Explicit Cursors:
Implicit Cursor: When select commands are executed, implicit cursors are created automatically.
Explicit Cursor: The user must define explicit cursors by giving them a name.
Implicit Cursor: They can only retrieve a single row at a time.
Explicit Cursor: Multiple rows can be retrieved by using explicit cursors.
Implicit Cursor: After execution, it automatically closes.
Explicit Cursor: Need to close after execution.
Implicit Cursor: implicit Cursors are characterized as:
BEGIN
SELECT attr_name from table_name
where CONDITION;
END
Explicit Cursor: Explicit Cursors are characterized as:
DECLARE
CURSOR cur_name IS
SELECT attr_name from table_name
where CONDITION;
BEGIN
...
