Joining of tables allows you to join multiple tables using different techniques. A part of payroll system of an organisation is shown in Table 1. Assume that the first three tuples are assigned to X and the second three tuples are assigned to be Y.

Perform outer joining operations on these tuples by answering the following questions:

1.1 Display the whole (full) outer join of the provided Table 1 with itself (Condition Staff_id=Staff_id).

Table 1 Staff_id Name Age Level 0001 Themba 34 7 0002 Julian 43 9 0003 Christopher 26 Null 0004 Mandla 56 10 0005 Tobogo 37 7 0006 Samson 29 Null