Each owner owns one or more cats, and every cat has exactly one owner.

Question

Each owner owns one or more cats, and every cat has exactly one owner.

• The name and surname of each owner must be stored in the database.
• The name of each cat must be stored in the database.
• Each cat belongs to one specific breed, and many cats can belong to the same breed.
• The description of each breed must be stored in the database.
• A cat can enter many competitions, and many cats can enter the same competition.
• The description of each competition must be stored in the database.
Write the SQL code that will create the table structure for the table that stores
the cat details

Answer 1

CREATE TABLE CatDetails (

CatID INT NOT NULL PRIMARY KEY,
CatName VARCHAR(50) NOT NULL,
BreedID INT NOT NULL,
OwnerID INT NOT NULL,
FOREIGN KEY (BreedID) REFERENCES BreedDetails(BreedID),
FOREIGN KEY (OwnerID) REFERENCES OwnerDetails(OwnerID)
);

Answer 2

To create a table structure to store the cat details, including the owner, breed, and competition information, you can use the following SQL code:

```
CREATE TABLE owners (
owner_id INT PRIMARY KEY,
first_name VARCHAR(100),
last_name VARCHAR(100)
);

CREATE TABLE cats (
cat_id INT PRIMARY KEY,
name VARCHAR(100),
breed_id INT,
owner_id INT,
FOREIGN KEY (breed_id) REFERENCES breeds(breed_id),
FOREIGN KEY (owner_id) REFERENCES owners(owner_id)
);

CREATE TABLE breeds (
breed_id INT PRIMARY KEY,
description TEXT
);

CREATE TABLE competitions (
competition_id INT PRIMARY KEY,
description TEXT
);

CREATE TABLE cat_competitions (
cat_id INT,
competition_id INT,
PRIMARY KEY (cat_id, competition_id),
FOREIGN KEY (cat_id) REFERENCES cats(cat_id),
FOREIGN KEY (competition_id) REFERENCES competitions(competition_id)
);
```

In the above code, we have created four tables:
1. `owners`: to store the owner details.
2. `cats`: to store the cat details along with references to the owner and breed tables.
3. `breeds`: to store the breed details.
4. `competitions`: to store the competition details.

Additionally, we have created a fifth table `cat_competitions` to store the relationship between cats and competitions, with foreign key references to the `cats` and `competitions` tables.

Note: You may need to modify the data types and sizes of the columns based on your specific requirements.