Tabele w bazie danych:
Users: Those who will place bets.
Sports: Different sports available for betting.
Leagues: Various leagues or tournaments within a sport.
Events: Specific matches or games within a league.
Bets: Bets placed by users on events.
Outcomes: Possible outcomes for an event.


Zawartość tabel:
1. Users
user_id (PK): Unique identifier for each user.
username: User's chosen name.
email: User's email.
password: User's encrypted password.
balance: Amount of money the user has.

2. Sports
sport_id (PK): Unique identifier for each sport.
name: Name of the sport.

3. Leagues
league_id (PK): Unique identifier for each league.
sport_id (FK): Reference to the sport the league belongs to.
name: Name of the league or tournament.

4. Events
event_id (PK): Unique identifier for each event.
league_id (FK): Reference to the league the event is part of.
name: Name of the event (e.g., "Team A vs Team B").
event_date: Date and time when the event will take place.

5. Outcomes
outcome_id (PK): Unique identifier for each possible outcome.
event_id (FK): Reference to the event.
description: Description of the outcome (e.g., "Team A wins").
odds: Odds for this outcome, a decimal value that represents the multiplier for the bet if this outcome occurs (e.g., 1.50).

6. Bets
bet_id (PK): Unique identifier for each bet.
user_id (FK): Reference to the user who placed the bet.
amount: Amount of money placed on the bet.
outcome_id (FK): The predicted outcome for the bet.