How can database normalization principles be applied to improve the query for selecting teams in a PHP script?

Applying database normalization principles can improve the query for selecting teams in a PHP script by organizing the data into separate tables to reduce redundancy and improve data integrity. By breaking down the data into smaller, related tables and using foreign keys to establish relationships between them, queries can be optimized for better performance and efficiency. 

// Example of applying normalization principles to improve team selection query

// Table structure for teams
CREATE TABLE teams (
    team_id INT PRIMARY KEY,
    team_name VARCHAR(50)
);

// Table structure for players
CREATE TABLE players (
    player_id INT PRIMARY KEY,
    player_name VARCHAR(50),
    team_id INT,
    FOREIGN KEY (team_id) REFERENCES teams(team_id)
);

// Query to select teams with their players
SELECT teams.team_name, GROUP_CONCAT(players.player_name) AS players
FROM teams
LEFT JOIN players ON teams.team_id = players.team_id
GROUP BY teams.team_id;

Keywords

database normalization query optimization PHP script teams selection SQL optimization

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