In a relational data model, for normalization purposes, product category lookup, product sub-category lookup, product lookup, and and product feature lookups are are not merged as a single table. In a dimensional data modeling(star schema), these tables would be merged as a single table called PRODUCT DIMENSION for performance and slicing data requirements.
| Product Category Code | Product Category Name | DateTimeStamp |
|---|---|---|
| 1 | Apparel | 1/1/2005 11:23:31 AM |
| 2 | Shoe | 1/1/2005 11:23:31 AM |
| Product Sub-Category Code | Product Sub-Category Name | DateTimeStamp |
|---|---|---|
| 11 | Shirt | 1/1/2005 11:23:31 AM |
| 12 | Trouser | 1/1/2005 11:23:31 AM |
| 13 | Casual | 1/1/2005 11:23:31 AM |
| 14 | Formal | 1/1/2005 11:23:31 AM |
| Product Code | Product Name | DateTimeStamp |
|---|---|---|
| Product Code | Product Name | DateTimeStamp |
| 1001 | Van Heusen | 1/1/2005 11:23:31 AM |
| 1002 | Arrow | 1/1/2005 11:23:31 AM |
| 1003 | Nike | 1/1/2005 11:23:31 AM |
| 1004 | Adidas | 1/1/2005 11:23:31 AM |
| Product Feature Code | Product Feature Description | DateTimeStamp |
|---|---|---|
| 10001 | Van-M | 1/1/2005 11:23:31 AM |
| 10002 | Van-L | 1/1/2005 11:23:31 AM |
| 10003 | Arr-XL | 1/1/2005 11:23:31 AM |
| 10004 | Arr-XXL | 1/1/2005 11:23:31 AM |
| 10005 | Nike-8 | 1/1/2005 11:23:31 AM |
| 10006 | Nike-9 | 1/1/2005 11:23:31 AM |
| 10007 | Adidas-10 | 1/1/2005 11:23:31 AM |
| 10008 | Adidas-11 | 1/1/2005 11:23:31 AM |
| Product Dimension Id | Product Category Name | Product Sub-Category Name | Product Name | Product Feature Description | DateTimeStamp |
|---|---|---|---|---|---|
| 100001 | Apparel | Shirt | Van Heusen | Van-M | 1/1/2005 11:23:31 AM |
| 100002 | Apparel | Shirt | Van Heusen | Van-L | 1/1/2005 11:23:31 AM |
| 100003 | Apparel | Shirt | Arrow | Arr-XL | 1/1/2005 11:23:31 AM |
| 100004 | Apparel | Shirt | Arrow | Arr-XXL | 1/1/2005 11:23:31 AM |
| 100005 | Shoe | Casual | Nike | Nike-8 | 1/1/2005 11:23:31 AM |
| 100006 | Shoe | Casual | Nike | Nike-9 | 1/1/2005 11:23:31 AM |
| 100007 | Shoe | Casual | Adidas | Adidas-10 | 1/1/2005 11:23:31 AM |
| 100008 | Shoe | Casual | Adidas | Adidas-11 | 1/1/2005 11:23:31 AM |
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