Merge pull request #28 from soat-fiap/readme_update

update readme

README.md

@@ -16,9 +16,7 @@ This project contains the database schema and related files for the BMB applicat
 ├── outputs.tf
 ├── terraform.tfvars
 └── scripts/
-    ├── create_tables.sql
-    ├── insert_data.sql
-    └── update_schema.sql
+    ├── create_table_script.sql
 ```
 
 ## Dependencies
@@ -38,13 +36,7 @@ terraform apply
 
 ```mermaid
  erDiagram
-    Customers {
-        char(36) Id
-        varchar(11) Cpf
-        varchar(100) Name
-        varchar(100) Email
-    }
-    
+   
     Products {
         char(36) Id
         varchar(100) Name
@@ -83,12 +75,31 @@ terraform apply
         decimal(10) Amount
     }
     
-    Customers ||--o{ Orders : "has"
     Orders ||--|{ OrderItems : "contains"
     Products ||--o{ OrderItems : "included in"
     Orders ||--o| Payments : "paid with"
 ```
 
+## No more Customers table
+The Customers table was removed from the schema as we've integrated Amazon Cognito for user management. This leverages a robust, existing solution for the generic subdomain of user/customer management.
+
+## Why MySql?
+I've decided to use MySQL as the database for the fast-food ordering system following the reasons below:
+
+* **Simplicity:**
+    * Easy installation, configuration, and management, ideal for both the development team and the production environment.
+    * Familiar and widely used SQL syntax, simplifying query writing and maintenance.
+* **Performance:**
+    * High performance for **TRANSACTIONAL OPERATIONS**, ensuring fast processing of orders and payments, even during peak hours.
+    * Efficient query optimization and indexing features for quick response times.
+* **Reliability:**
+    * Data integrity features and ACID properties (Atomicity, Consistency, Isolation, Durability) guarantee information consistency and security.
+* **Cost-effectiveness:**
+    * Open-source solution with no licensing costs, making it an affordable option for the project.
+    * Extensive user community and comprehensive documentation readily available online.
+
+* **Aurora Serverless**
+    - I've also chosed to use Aurora Serverless, so I can take advantage of all serverless features like no need fo managing database servers, updates, patching and of course availability andscalability
 ## This repo on the infrastructure
 
-![Architecture Diagram](aws-infra-phase-3.png)
+![Architecture Diagram](aws-infra-phase-3.png)

init/sql/schema.sql

@@ -1,15 +1,5 @@
 use techchallengedb;
 
-CREATE TABLE IF NOT EXISTS Customers
-(
-    Id    char(36)  not null
-        primary key,
-    Cpf   varchar(11) not null,
-    Name  varchar(100) null,
-    Email varchar(100) null
-);
-
-
 CREATE TABLE IF NOT EXISTS Products
 (
     Id          char(36)      not null comment 'product id'