Lucien Cartier-Tilet
bca0619f30
Currently, all methods declared in the Georm trait are available. If a struct has an ID pointing towards another entity, the user can create a get method to get the entity pointed at from the database too (local one-to-one relationship). I still need to implement remote one-to-one relationships (one-to-one relationships when the ID of the remote object is not available locally). I still need to also test and debug one-to-many relationships (ID of the remote entiies not available locally) and many-to-many relationships (declared in a dedicated table). For now, IDs in all cases are simple types recognized by SQLx that are not arrays. Options are only supported when explicitely specified for one-to-one relationships.
39 lines
949 B
SQL
39 lines
949 B
SQL
CREATE TABLE biographies (
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id SERIAL PRIMARY KEY,
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content TEXT NOT NULL
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);
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CREATE TABLE authors (
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id SERIAL PRIMARY KEY,
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name VARCHAR(100) NOT NULL,
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biography_id INT,
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FOREIGN KEY (biography_id) REFERENCES biographies(id)
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);
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CREATE TABLE books (
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ident SERIAL PRIMARY KEY,
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title VARCHAR(100) NOT NULL,
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author_id INT NOT NULL,
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FOREIGN KEY (author_id) REFERENCES authors(id) ON DELETE CASCADE
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);
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CREATE TABLE reviews (
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id SERIAL PRIMARY KEY,
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book_id INT NOT NULL,
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review TEXT NOT NULL,
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FOREIGN KEY (book_id) REFERENCES books(ident) ON DELETE CASCADE
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);
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CREATE TABLE genres (
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id SERIAL PRIMARY KEY,
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name VARCHAR(100) NOT NULL
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);
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CREATE TABLE book_genres (
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book_id INT NOT NULL,
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genre_id INT NOT NULL,
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PRIMARY KEY (book_id, genre_id),
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FOREIGN KEY (book_id) REFERENCES books(ident) ON DELETE CASCADE,
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FOREIGN KEY (genre_id) REFERENCES genres(id) ON DELETE CASCADE
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);
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