What is joining table

Answer 1

combine two or more tables as a single table. to complete this mission, those tables should have some common fields.

Answer 2

in a database there are tables.
tables contains data.
the data is seperated into fields.

some tables need data from more than one other table, so there comes a need to join a table. Joining basically means to use at least one field from any table and incorporate it with at least one field from one other table.