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72 lines
2.3 KiB
Markdown
72 lines
2.3 KiB
Markdown
1. **Table: Items**
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- This table will store information about base items like powerups.
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```sql
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CREATE TABLE items (
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item_id serial PRIMARY KEY,
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name VARCHAR(255) NOT NULL
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);
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```
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2. **Table: Synonyms**
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- This table will store synonyms for each item, referencing the `items` table.
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```sql
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CREATE TABLE synonyms (
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synonym_id serial PRIMARY KEY,
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item_id INT REFERENCES items(item_id),
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synonym VARCHAR(255) NOT NULL
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);
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```
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3. **Table: Genres**
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- This table will store different genres, like "fantasy" or "modern day."
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```sql
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CREATE TABLE genres (
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genre_id serial PRIMARY KEY,
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name VARCHAR(255) NOT NULL
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);
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```
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4. **Table: Items_Genres**
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- This table will establish a many-to-many relationship between items and genres, as an item can belong to multiple genres.
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```sql
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CREATE TABLE items_genres (
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item_id INT REFERENCES items(item_id),
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genre_id INT REFERENCES genres(genre_id),
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PRIMARY KEY (item_id, genre_id)
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);
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```
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With this schema, you can:
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- Add base items like powerups to the `items` table.
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- Associate synonyms for each base item in the `synonyms` table, referencing the corresponding item.
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- Categorize base items into different genres in the `genres` table.
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- Establish relationships between base items and genres in the `items_genres` table.
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Here's an example of how you might use this schema:
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```sql
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-- Insert a base item
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INSERT INTO items (name) VALUES ('Health Potion');
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-- Insert synonyms for the base item
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INSERT INTO synonyms (item_id, synonym) VALUES (1, 'Health Potion');
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INSERT INTO synonyms (item_id, synonym) VALUES (1, 'Stimpack');
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-- Insert genres
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INSERT INTO genres (name) VALUES ('Fantasy');
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INSERT INTO genres (name) VALUES ('Modern Day');
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-- Associate the base item with genres
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INSERT INTO items_genres (item_id, genre_id) VALUES (1, 1); -- Health Potion belongs to Fantasy
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INSERT INTO items_genres (item_id, genre_id) VALUES (1, 2); -- Health Potion also belongs to Modern Day
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-- Select the Fantasy name of an the heavy armor base item that you are looking for.
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SELECT genres.name
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FROM genres
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JOIN items_genres ON genres.genre_id = items_genres.genre_id
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JOIN base_items ON items_genres.base_item_id = base_items.item_id
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WHERE base_items.name = 'heavy armor'
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AND genres.name = 'Fantasy';
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```
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