Data Model:

MarvelHeroes(hid, hero, realname)

DCHeroes(hid, hero, realname)

Movies(mid, moviename, year)

HeroInMovie(hid, mid)


EXAMPLE INSTANCE
=====================

Marvel_Heroes

HID	HERO	        REALNAME
------------------------------------
m1	Spiderman	Peter Parker
m2	Black Panther	T’Challa
m3	Thor	        Thor
m4	Jessica Jones	Jessica Jones
m5	Iron Man	Tony Stark

DC_Heroes

HID	HERO	        REALNAME
------------------------------------
d1	Superman	Clark Kent
d2	Supergirl	Kara Danvers
d3	Wonder Woman	Diana Prince
d4	Deadpool	Wade Winston
d5	Green Lantern	Hal Jordan
d6	Arrow	        Oliver Queen

Movies

MID	MOVIENAME	                YEAR
--------------------------------------------
1	Superman: Man of Tomorrow	2020
2	Spiderman: Homecoming	        2017
3	Wonder Woman	                2017
4	Deadpool	                2016
5	Green Lantern	                2011
6	Black Panther	                2018
7	Thor	                        2011
8	Thor: The Dark World	        2013
9	Avengers	                2012


HeroInMovie

hid	Mid
-------------
d1	1
m1	2
d3	3
d4	4
d5	5
m2	6
m3	7
m3	8
m3	9
m5	9