USE master;

IF NOT EXISTS(SELECT 1 FROM sys.schemas WHERE name = 'Chains')
BEGIN
    EXEC sys.sp_executesql N'CREATE SCHEMA Chains;'
END

IF OBJECT_ID ('dbo.products', 'U') IS NOT NULL  
  DROP TABLE products;  
GO  
CREATE TABLE products 
(  
  id int IDENTITY(1,1),  
  name varchar (20),  
  description varchar(30),
  CONSTRAINT pk_products PRIMARY KEY NONCLUSTERED (id)
);

IF OBJECT_ID ('dbo.tasks', 'U') IS NOT NULL
  DROP TABLE tasks;
GO
CREATE TABLE tasks
(
  taskid int IDENTITY(1,1),
  taskname varchar (20),
  productid int,
  CONSTRAINT pk_tasks PRIMARY KEY NONCLUSTERED (taskid),
  CONSTRAINT fk_products FOREIGN KEY (productid) REFERENCES products (id),
);

IF OBJECT_ID ('dbo.people', 'U') IS NOT NULL
  DROP TABLE people;
GO
CREATE TABLE people
(
  name varchar(30),
  age varchar(20),
  CONSTRAINT pk_people PRIMARY KEY NONCLUSTERED (name, age)
);
  
INSERT products
  (name, description)  
VALUES  
  ('Bananas', 'Fruit thing'),
  ('Meat', 'Animal thing');
  
INSERT tasks
  (taskname, productid)
VALUES
  ('Processing', 1);

INSERT INTO people (name, age)
VALUES ('Bob', '30'),
  ('Bert', '10'),
  ('Jack', '12'),
  ('Mike', '31'),
  ('Dave', '44'),
  ('Jim', '43'),
  ('Kerry', '32'),
  ('Julie', '12'),
  ('Kim', '55'),
  ('Andy', '33'),
  ('John', '22'),
  ('Ruth', '66'),
  ('Robert', '88'),
  ('Bobert', '99'),
  ('Jan', '22'),
  ('Megan', '11');


IF OBJECT_ID ('Chains.sizes', 'U') IS NOT NULL
  DROP TABLE Chains.sizes;
GO
CREATE TABLE Chains.sizes
(
  sizeid int IDENTITY(1, 1),
  name varchar(30),
  CONSTRAINT pk_size PRIMARY KEY NONCLUSTERED (sizeid)
);