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Editorial Team
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Asked: 2026-05-23T20:17:37+00:00

Product +—————-+—————-+——–+——-+———-+—————-+ |Field | Type | Null | Key | Default | Extra |

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Product

+----------------+----------------+--------+-------+----------+----------------+
|Field           |  Type          |  Null  |  Key  | Default  |  Extra         |
+----------------+----------------+--------+-------+----------+----------------+
|id              |  int(11)       |  No    |  PRI  | Null     | auto_increment | 
|modelNumber     |  varchar(150)  |  No    |       |          |                |
|manufacturer_id |  int(11)       |  No    |       |          |                |
|name            |  varchar(100)  |  No    |       |          |                |
|department_id   |  int(11)       |  No    |       |          |                |
|class_id        |  int(11)       |  No    |       |          |                |
|subclass_id     |  int(11)       |  No    |       |          |                |
+----------------+----------------+--------+-------+----------+----------------+

Department_id

+---------------+----------------+--------+-------+----------+-------------+
|Field          | Type           | Null   | Key   | Default  | Extra       |
+---------------+----------------+--------+-------+----------+-------------+
|department_id  | int(11)        |        |  PRI  |          |             |
|name           | varchar(100)   |        |       |          |             |
+---------------+----------------+--------+-------+----------+-------------+

Manufacturer

+----------------+----------------+--------+-------+----------+---------------+
|Field           | Type           | Null   | Key   | Default  | Extra         |
+----------------+----------------+--------+-------+----------+---------------+
|manufacturer_id | int(11)        |        |  PRI  |          |               |
|name            | varchar(100)   |        |       |          |               |     
+----------------+----------------+--------+-------+----------+---------------+

Class

+-----------+----------------+--------+-------+----------+----------+
|Field      | Type           | Null   | Key   | Default  | Extra    |
+-----------+----------------+--------+-------+----------+----------+
|class_id   | int(11)        |        | PRI   |          |          |
|name       | varchar(100)   |        |       |          |          |
+-----------+----------------+--------+-------+----------+----------+

Subclass

+---------------+----------------+--------+-------+----------+------------+
|Field          | Type           | Null   | Key   | Default  | Extra      |
+---------------+----------------+--------+-------+----------+------------+
|subclass_id    | int(11)        |        |  PRI  |          |            |
|name           | varchar(100)   |        |       |          |            |
+---------------+----------------+--------+-------+----------+------------+

I do not have full control over how I obtain the data, as I am getting a large amount of data via XML. I need to create a database that will allow me to expand.

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1 Answer

  1. Editorial Team

    if classid and subclassid are not related,it is in 3nf and not in BCNF because modelNumber is not a dependency on id. but if they are related its not even in 3nf

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