What are the potential pitfalls of storing keywords directly in an article table without proper indexing or relational structure in PHP?

Storing keywords directly in an article table without proper indexing or relational structure can lead to inefficient searching and querying of the data. To solve this issue, it is recommended to create a separate table for keywords and establish a proper indexing and relational structure to improve performance. 

// Create a separate table for keywords
CREATE TABLE keywords (
    id INT PRIMARY KEY AUTO_INCREMENT,
    keyword VARCHAR(50)
);

// Create a pivot table to establish a many-to-many relationship between articles and keywords
CREATE TABLE article_keywords (
    article_id INT,
    keyword_id INT,
    FOREIGN KEY (article_id) REFERENCES articles(id),
    FOREIGN KEY (keyword_id) REFERENCES keywords(id)
);

// Query to insert keywords for an article
INSERT INTO keywords (keyword) VALUES ('keyword1'), ('keyword2');

// Query to associate keywords with an article
INSERT INTO article_keywords (article_id, keyword_id) VALUES (1, 1), (1, 2);

Keywords

PHP database indexing relational structure performance

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