How to solve such question and what should be the answer.

Question

Consider a relation R(ABCDE) and functional dependency F1 = {A → B, C → E, B → D}.

If the relation is decomposed into BCNF with lossless decomposition and dependency preserving then total number tables is ___________.

I am getting 3 but the answer given is 4.

Comments

How you decompose?

I'm  getting $4$

---

@Lakshman Patel RJIT Please explain fully. I have a lot of doubts in such questions.

Answer 1

The relation is decomposed into BCNF with lossless decomposition and dependency preserving then total number tables $=4$

Comments

@Lakshman Patel RJIT

Great answer thanks.

One irrelevant question. How do you write such a colorful answer?

I mean which tool? 

---

@JEET

https://en.wikipedia.org/wiki/Microsoft_Paint

I use only when required to draw something. otherwise write in text form is better.

thanks