Uso de IA generativa para entender melhor o SQL

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AI Explanation Result: 
-- Create a new schema called "my_company" to logically group related tables.
CREATE SCHEMA "my_company";

-- Create a table named "job_titles" in the "my_company" schema to store job positions.
-- The table has a primary key column "job_title_id" and a required column "job_title_name".
CREATE COLUMN TABLE "my_company"."job_titles" (
    "job_title_id" NVARCHAR(2) PRIMARY KEY,
    "job_title_name" NVARCHAR(100) NOT NULL
);

-- Create a table named "departments" in the "my_company" schema to represent company departments.
-- The table has a primary key "department_id" and columns for department name and head.
CREATE COLUMN TABLE "my_company"."departments" (
    "department_id" NVARCHAR(3) PRIMARY KEY,
    "department_name" NVARCHAR(100),
    "department_head" NVARCHAR(100)
);

-- Create a table named "employees" in the "my_company" schema to store employee information.
-- The table includes an auto-incrementing primary key "employee_id", employee names, department and 
-- job references, and hire date.
-- The "department_id" column is a foreign key referencing the "departments" table.
-- The "job_title_id" column is a foreign key referencing the "job_titles" table.
CREATE COLUMN TABLE "my_company"."employees" (
    "employee_id" INTEGER GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    "first_name" NVARCHAR(50),
    "last_name" NVARCHAR(50),
    "department_id" NVARCHAR(3),
    "job_title_id" NVARCHAR(2),
    "hire_date" DATE,
    FOREIGN KEY ("department_id") REFERENCES "my_company"."departments"("department_id"),
    FOREIGN KEY ("job_title_id") REFERENCES "my_company"."job_titles"("job_title_id")
);

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Write me, in human readable natural language, a data model definition document from the following text:

Create a new schema called "my_company" to logically group related tables.

Create a table named "job_titles" in the "my_company" schema to store job positions. The table has a 
primary key column "job_title_id" and a required column "job_title_name".

Create a table named "departments" in the "my_company" schema to represent company departments. The 
table has a primary key "department_id" and columns for department name and head.

Create a table named "employees" in the "my_company" schema to store employee information. The table 
includes an auto-incrementing primary key "employee_id", employee names, department and job references, 
and hire date. The "department_id" column is a foreign key referencing the "departments" table. The 
"job_title_id" column is a foreign key referencing the "job_titles" table.