diff --git a/.gitignore b/.gitignore
index 1275d8b..3bb08a8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ node_modules
 db.json
 db.*.json
 schema.*.json
+*.csv
diff --git a/README.md b/README.md
index ca414e1..7af03fe 100644
--- a/README.md
+++ b/README.md
@@ -16,32 +16,44 @@ sys     0m0.983s
 node schema.js
 ```
 
-## Product Types
+## Database Overview
+
+### Product Types
 
 ```bash
 jq '.[].name' db.json
 ```
 
-## Product Brands
+### Product Brands
 
 ```bash
 jq '.[0].products[].name' db.json
 ```
 
-## Product Series
+### Product Series
 
 ```bash
 jq '.[0].products[0].subproducts[].name' db.json
 ```
 
-## Products
+### Products
 
 ```bash
 jq '.[0].products[0].subproducts[0].skus[]."Product Name"' db.json
 ```
 
-## Specification Categories
+### Specification Categories
 
 ```bash
 jq '.[0].products[0].subproducts[0].skus[0].specs | keys' db.json
 ```
+
+## Data Loading
+
+```bash
+\copy ProductTypes FROM 'ProductTypes.csv' DELIMITER ',' CSV HEADER ENCODING 'UTF8';
+\copy ProductBrands FROM 'ProductBrands.csv' DELIMITER ',' CSV HEADER ENCODING 'UTF8';
+\copy ProductSeries FROM 'ProductSeries.csv' DELIMITER ',' CSV HEADER ENCODING 'UTF8';
+\copy Products FROM 'Products.csv' DELIMITER ',' CSV HEADER ENCODING 'UTF8';
+\copy ProductsSpecifications FROM 'ProductsSpecifications.csv' DELIMITER ',' CSV HEADER ENCODING 'UTF8';
+```
\ No newline at end of file
diff --git a/csv.sh b/csv.sh
new file mode 100644
index 0000000..dc52391
--- /dev/null
+++ b/csv.sh
@@ -0,0 +1,80 @@
+#!/bin/bash
+
+# This script reads a db.json file, and convert it into a series of CSV files:
+# ProductTypes.csv
+# ProductBrands.csv
+# ProductSeries.csv
+# Products.csv
+# ProductsSpecifications.csv
+
+PRODUCT_TYPES=$(jq '.[].name' db.json | tr -d '"')
+PRODUCT_TYPE_ID=1
+rm -fr ProductTypes.csv
+rm -fr ProductBrands.csv
+rm -fr ProductSeries.csv
+rm -fr Products.csv
+
+echo "Id,Name" >> ProductTypes.csv
+echo "ProductType,Id,Name" >> ProductBrands.csv
+echo "ProductType,ProductBrand,Id,Name,Url" >> ProductSeries.csv
+echo "ProductType,ProductBrand,ProductSerie,Id,Name,Url" >> Products.csv
+
+while IFS= read -r PRODUCT_TYPE ; do
+    echo "$PRODUCT_TYPE_ID,$PRODUCT_TYPE" >> ProductTypes.csv
+
+    PRODUCT_BRANDS=$(jq \
+        --arg product_type "$(echo "$PRODUCT_TYPE")" \
+        '.[] | select(.name == $product_type) | .products[].name' db.json | tr -d '"')
+    PRODUCT_BRAND_ID=1
+
+    while IFS= read -r PRODUCT_BRAND ; do
+        echo "$PRODUCT_TYPE_ID,$PRODUCT_BRAND_ID,$PRODUCT_BRAND" >> ProductBrands.csv
+
+        PRODUCT_SERIES=$(jq \
+            --arg product_type "$(echo "$PRODUCT_TYPE")" \
+            --arg product_brand "$(echo "$PRODUCT_BRAND")" \
+            '.[] | select(.name == $product_type) | .products[] | select(.name == $product_brand) | .subproducts[].name' db.json | tr -d '"')
+        PRODUCT_SERIE_ID=1
+        
+        while IFS= read -r PRODUCT_SERIE ; do
+            PRODUCT_SERIE_URL=$(jq \
+                --arg product_serie "$(echo "$PRODUCT_SERIE")" \
+                '.[].products[].subproducts[] | select(.name == $product_serie) | .href' db.json | tr -d '"')
+            PRODUCT_SERIE=$(echo "$PRODUCT_SERIE" | tr -d '\r')
+            echo "$PRODUCT_TYPE_ID,$PRODUCT_BRAND_ID,$PRODUCT_SERIE_ID,$PRODUCT_SERIE,$PRODUCT_SERIE_URL" >> ProductSeries.csv
+
+            PRODUCTS=$(jq \
+                --arg product_type "$(echo "$PRODUCT_TYPE")" \
+                --arg product_brand "$(echo "$PRODUCT_BRAND")" \
+                --arg product_serie "$(echo "$PRODUCT_SERIE")" \
+                '.[] | select(.name == $product_type) | .products[] | select(.name == $product_brand) | .subproducts[] | select(.name == $product_serie) | .skus[]."Product Name"' db.json | tr -d '"')
+            PRODUCT_ID=1
+
+            while IFS= read -r PRODUCT ; do
+                PRODUCT_URL=$(jq \
+                    --arg product "$(echo "$PRODUCT")" \
+                    '.[].products[].subproducts[].skus[] | select(."Product Name" == $product) | .Url' db.json | tr -d '"')
+                PRODUCT=$(echo "$PRODUCT" | tr -d '\r')
+                echo "$PRODUCT_TYPE_ID,$PRODUCT_BRAND_ID,$PRODUCT_SERIE_ID,$PRODUCT_ID,$PRODUCT,$PRODUCT_URL" >> Products.csv
+                PRODUCT_ID=$((PRODUCT_ID + 1))
+            done <<< "$PRODUCTS"
+            PRODUCT_SERIE_ID=$((PRODUCT_SERIE_ID + 1))
+        done <<< "$PRODUCT_SERIES"
+        PRODUCT_BRAND_ID=$((PRODUCT_BRAND_ID + 1))
+    done <<< "$PRODUCT_BRANDS"
+    PRODUCT_TYPE_ID=$((PRODUCT_TYPE_ID + 1))
+done <<< "$PRODUCT_TYPES"
+
+echo "ProductType,ProductBrand,ProductSerie,ProductId,Specification,Value" >> ProductsSpecifications.csv
+sed 1d Products.csv | while IFS= read -r LINE; do
+    PRODUCT_TYPE=$(echo $LINE | awk -F, '{print $1}')
+    PRODUCT_BRAND=$(echo $LINE | awk -F, '{print $2}')
+    PRODUCT_SERIE=$(echo $LINE | awk -F, '{print $3}')
+    PRODUCT_ID=$(echo $LINE | awk -F, '{print $4}')
+    PRODUCT_NAME=$(echo $LINE | awk -F, '{print $5}')
+
+    jq \
+        --arg product "$(echo  "$PRODUCT_NAME")" \
+        '.[].products[].subproducts[].skus[] | select(."Product Name" == $product) | .specs | [leaf_paths as $path | {"key": $path | join("."), "value": getpath($path)}] | (map(keys) | add | unique) as $cols | map(. as $row | $cols | map($row[.])) as $rows | $rows[] | @csv'\
+        db.json | sed -e "s/^/${PRODUCT_TYPE},${PRODUCT_BRAND},${PRODUCT_SERIE},${PRODUCT_ID},/" >> ProductsSpecifications.csv
+done
\ No newline at end of file
diff --git a/query.sql b/query.sql
new file mode 100644
index 0000000..612f727
--- /dev/null
+++ b/query.sql
@@ -0,0 +1,431 @@
+-- 1.	Which is the latest Intel Core Processor released?
+
+select IntelCoreProducts.Name, IntelCoreProducts.Url, LatestProducts.Value as "Launch Date"
+from (
+	select ProductType, ProductBrand, ProductSerie, Id, Name, Url
+	from Products
+	where (ProductType, ProductBrand) in (
+		select ProductType, Id as ProductBrand
+		from ProductBrands
+		where name = 'Intel® Core™ Processors'
+	)
+) IntelCoreProducts
+join (
+	select *
+	from ProductsSpecifications
+	where Specification = 'Supplemental Information.Launch Date'
+	and Value = (
+		select Value as "Max Launch Date"
+		from ProductsSpecifications
+		where (ProductType, ProductBrand, ProductSerie, ProductId) in (
+			select ProductType, ProductBrand, ProductSerie, Id as ProductId
+			from Products
+			where (ProductType, ProductBrand) in (
+				select ProductType, Id as ProductBrand
+				from ProductBrands
+				where name = 'Intel® Core™ Processors'
+			)
+		)
+		and Specification = 'Supplemental Information.Launch Date'
+		order by substring(Value from 4 for 2) desc, substring(Value from 2 for 1) desc
+		limit 1
+	)
+) LatestProducts
+on IntelCoreProducts.ProductType = LatestProducts.ProductType
+and IntelCoreProducts.ProductBrand = LatestProducts.ProductBrand
+and IntelCoreProducts.ProductSerie = LatestProducts.ProductSerie
+and IntelCoreProducts.Id = LatestProducts.ProductId
+
+-- 2.	Which is the latest Intel Xeon Processor released?
+
+select IntelXeonProducts.Name, IntelXeonProducts.Url, LatestProducts.Value as "Launch Date"
+from (
+	select ProductType, ProductBrand, ProductSerie, Id, Name, Url
+	from Products
+	where (ProductType, ProductBrand) in (
+		select ProductType, Id as ProductBrand
+		from ProductBrands
+		where name = 'Intel® Xeon® Processors'
+	)
+) IntelXeonProducts
+join (
+	select *
+	from ProductsSpecifications
+	where Specification = 'Supplemental Information.Launch Date'
+	and Value = (
+		select Value as "Max Launch Date"
+		from ProductsSpecifications
+		where (ProductType, ProductBrand, ProductSerie, ProductId) in (
+			select ProductType, ProductBrand, ProductSerie, Id as ProductId
+			from Products
+			where (ProductType, ProductBrand) in (
+				select ProductType, Id as ProductBrand
+				from ProductBrands
+				where name = 'Intel® Xeon® Processors'
+			)
+		)
+		and Specification = 'Supplemental Information.Launch Date'
+		order by substring(Value from 4 for 2) desc, substring(Value from 2 for 1) desc
+		limit 1
+	)
+) LatestProducts
+on IntelXeonProducts.ProductType = LatestProducts.ProductType
+and IntelXeonProducts.ProductBrand = LatestProducts.ProductBrand
+and IntelXeonProducts.ProductSerie = LatestProducts.ProductSerie
+and IntelXeonProducts.Id = LatestProducts.ProductId;
+
+-- 3.	Which processors works with a Thermal Design Power between 95 and 105 W?
+
+select Name, Url
+from Products
+where (ProductType, ProductBrand, ProductSerie, Id) in (
+	select ProductType, ProductBrand, ProductSerie, ProductId as Id
+	from ProductsSpecifications
+	where Specification = 'CPU Specifications.TDP'
+	and left(Value, -2)::numeric >= 95
+	and left(Value, -2)::numeric <= 105
+);
+
+-- 4.	Which processors were launched in 2021?
+
+select Name, Url
+from Products
+join (
+	select ProductType, ProductBrand, ProductSerie, ProductId
+	from ProductsSpecifications
+	where Specification = 'Supplemental Information.Launch Date'
+	and substring(Value from 4 for 2) = '21'
+) ProductsLaunchedIn2021
+on Products.ProductType = ProductsLaunchedIn2021.ProductType
+and Products.ProductBrand = ProductsLaunchedIn2021.ProductBrand
+and Products.ProductSerie = ProductsLaunchedIn2021.ProductSerie
+and Products.Id = ProductsLaunchedIn2021.ProductId
+where Products.ProductType = (
+	select Id
+	from ProductTypes
+	where name = 'Processors'
+);
+
+-- 5.	Which is the processor with the maximum base frequency available?
+
+select Name, Url
+from Products
+join (
+	select ProductType, ProductBrand, ProductSerie, ProductId
+	from ProductsSpecifications
+	where ProductType = (
+			select Id
+			from ProductTypes
+			where Name = 'Processors'
+		)
+	and Specification = 'CPU Specifications.Processor Base Frequency'
+	and right(Value, 3) = 'GHz' 
+	and left(Value, -4)::numeric = (
+		select max(left(Value, -4)::numeric) as "Max Processor Base Frequency"
+		from ProductsSpecifications
+		where ProductType = (
+			select Id
+			from ProductTypes
+			where Name = 'Processors'
+		)
+		and Specification = 'CPU Specifications.Processor Base Frequency'
+		and right(Value, 3) = 'GHz'
+	)
+) ProcessorsWithMaxBaseFrequency
+on Products.ProductType = ProcessorsWithMaxBaseFrequency.ProductType
+and Products.ProductBrand = ProcessorsWithMaxBaseFrequency.ProductBrand
+and Products.ProductSerie = ProcessorsWithMaxBaseFrequency.ProductSerie
+and Products.Id = ProcessorsWithMaxBaseFrequency.ProductId;
+
+-- 6.	Which processor generation was available in 2018?
+
+select Name, Url
+from ProductSeries
+join (
+	select ProductType, ProductBrand, ProductSerie
+	from ProductsSpecifications
+	where Specification = 'Supplemental Information.Launch Date'
+	and substring(Value from 4 for 2) = '18'
+	and (ProductType, ProductBrand) = (
+		select ProductType, Id as ProductBrand
+		from ProductBrands
+		where name = 'Intel® Core™ Processors'
+	)
+) IntelCoreProcessorsLaunchedIn2018
+on ProductSeries.ProductType = IntelCoreProcessorsLaunchedIn2018.ProductType
+and ProductSeries.ProductBrand = IntelCoreProcessorsLaunchedIn2018.ProductBrand
+and ProductSeries.Id = IntelCoreProcessorsLaunchedIn2018.ProductSerie
+group by Name, Url
+
+-- 7.	Which is the most inexpensive NUC mini-PC?
+
+select Name, Url
+from Products
+join (
+	select ProductType, ProductBrand, ProductSerie, ProductId
+	from ProductsSpecifications
+	where Specification = 'Essentials.Recommended Customer Price'
+	and split_part(split_part(Value, ' ', 1), '$', 2)::numeric = (
+		select min("Min Price")
+		from (
+			select split_part(split_part(Value, ' ', 1), '$', 2)::numeric as "Min Price"
+			from ProductsSpecifications
+			where Specification = 'Essentials.Recommended Customer Price'
+			and ProductType = (
+				select Id
+				from ProductTypes
+				where Name = 'Intel® NUC'
+			)
+		) IntelNucMinPrices
+	)
+	and ProductType = (
+		select Id
+		from ProductTypes
+		where Name = 'Intel® NUC'
+	)
+) MinPriceIntelNuc
+on Products.ProductType = MinPriceIntelNuc.ProductType
+and Products.ProductBrand = MinPriceIntelNuc.ProductBrand
+and Products.ProductSerie = MinPriceIntelNuc.ProductSerie
+and Products.Id = MinPriceIntelNuc.ProductId
+
+-- 8.	Which is the most expensive NUC mini-PC?
+
+select Name, Url
+from Products
+join (
+	select ProductType, ProductBrand, ProductSerie, ProductId
+	from ProductsSpecifications
+	where Specification = 'Essentials.Recommended Customer Price'
+	and split_part(split_part(Value, ' ', 1), '$', 2)::numeric = (
+		select max("Max Price")
+		from (
+			select split_part(split_part(Value, ' ', 1), '$', 2)::numeric as "Max Price"
+			from ProductsSpecifications
+			where Specification = 'Essentials.Recommended Customer Price'
+			and ProductType = (
+				select Id
+				from ProductTypes
+				where Name = 'Intel® NUC'
+			)
+		) IntelNucMaxPrices
+	)
+	and ProductType = (
+		select Id
+		from ProductTypes
+		where Name = 'Intel® NUC'
+	)
+) MinPriceIntelNuc
+on Products.ProductType = MinPriceIntelNuc.ProductType
+and Products.ProductBrand = MinPriceIntelNuc.ProductBrand
+and Products.ProductSerie = MinPriceIntelNuc.ProductSerie
+and Products.Id = MinPriceIntelNuc.ProductId
+
+-- 9.	Which are the vPro enabled platforms in the 11th generation of Core products?
+
+select Name, Url
+from Products
+join (
+	select ProductType, ProductBrand, ProductSerie, ProductId
+	from ProductsSpecifications
+	where Specification = 'Advanced Technologies.Intel vPro® Platform Eligibility ‡'
+	and Value = 'Yes'
+	and (ProductType, ProductBrand, ProductSerie) in (
+		select ProductType, ProductBrand, Id as ProductSerie
+		from ProductSeries
+		where Name like '%' || '11th Generation Intel® Core™' || '%'
+	)
+) IntelVProEnabledProducts
+on Products.ProductType = IntelVProEnabledProducts.ProductType
+and Products.ProductBrand = IntelVProEnabledProducts.ProductBrand
+and Products.ProductSerie = IntelVProEnabledProducts.ProductSerie
+and Products.Id = IntelVProEnabledProducts.ProductId;
+
+-- 10.	Which are the different Intel FPGA platforms?
+
+select Name, Url
+from Products
+where ProductType = (
+	select Id
+	from ProductTypes
+	where Name = 'Intel® FPGAs'
+);
+
+-- 11.	Which is the latest available Intel IPU platforms?
+
+select Name, Url
+from Products
+join (
+	select distinct ProductType, ProductBrand, ProductSerie, ProductId
+	from ProductsSpecifications
+	where value like '%' || 'IPU' || '%'
+) IntelProductsWithIPU
+on Products.ProductType = IntelProductsWithIPU.ProductType
+and Products.ProductBrand = IntelProductsWithIPU.ProductBrand
+and Products.ProductSerie = IntelProductsWithIPU.ProductSerie
+and Products.Id = IntelProductsWithIPU.ProductId;
+
+-- 12.	Which is the average price of a Intel Core CPU by Generation?
+
+select Name, Url, "Avg Price"
+from ProductSeries
+join (
+	select ProductType, ProductBrand, ProductSerie,
+		trunc(avg(split_part(split_part(Value, ' ', 1), '$', 2)::numeric), 2)::money as "Avg Price"
+	from ProductsSpecifications
+	where (ProductType, ProductBrand) in (
+		select ProductType, Id as ProductBrand
+		from ProductBrands
+		where Name = 'Intel® Core™ Processors'
+	)
+	and Specification = 'Essentials.Recommended Customer Price'
+	group by ProductType, ProductBrand, ProductSerie
+) ProductSeriesAvgPrices
+on ProductSeries.ProductType = ProductSeriesAvgPrices.ProductType
+and ProductSeries.ProductBrand = ProductSeriesAvgPrices.ProductBrand
+and ProductSeries.Id = ProductSeriesAvgPrices.ProductSerie;
+
+-- 13.	Which platforms have more than 20 Cores and a Frequency Grater Than 4.5 GHz? 
+
+select Products.Name, Products.Url
+from Products
+join (
+	(
+		select ProductType, ProductBrand, ProductSerie, ProductId
+		from ProductsSpecifications
+		where Specification = 'CPU Specifications.Total Cores'
+		and Value::numeric > 20
+	)
+	INTERSECT
+	(
+		select ProductType, ProductBrand, ProductSerie, ProductId
+		from ProductsSpecifications
+		where Specification = 'CPU Specifications.Processor Base Frequency'
+		and right(Value, 3) = 'GHz' 
+		and left(Value, -4)::numeric >= 4.5
+	)
+) ProductsWithMoreThan20CoresAndMoreThan45Ghz
+on Products.ProductType = ProductsWithMoreThan20CoresAndMoreThan45Ghz.ProductType
+and Products.ProductBrand = ProductsWithMoreThan20CoresAndMoreThan45Ghz.ProductBrand
+and Products.ProductSerie = ProductsWithMoreThan20CoresAndMoreThan45Ghz.ProductSerie
+and Products.Id = ProductsWithMoreThan20CoresAndMoreThan45Ghz.ProductId;
+	
+-- 14.	Which platforms supports Intel Boot Guard?
+
+select Name, Url
+from Products
+join (
+	select distinct ProductType, ProductBrand, ProductSerie, ProductId
+	from ProductsSpecifications
+	where Specification = 'Security & Reliability.Intel® Boot Guard'
+	and Value = 'Yes'
+) IntelProductsWithIntelBootGuard
+on Products.ProductType = IntelProductsWithIntelBootGuard.ProductType
+and Products.ProductBrand = IntelProductsWithIntelBootGuard.ProductBrand
+and Products.ProductSerie = IntelProductsWithIntelBootGuard.ProductSerie
+and Products.Id = IntelProductsWithIntelBootGuard.ProductId;
+
+-- 15.	Which platforms supports Intel Remote Platform Erase?
+
+select Name, Url
+from Products
+join (
+	select distinct ProductType, ProductBrand, ProductSerie, ProductId
+	from ProductsSpecifications
+	where Specification = 'Security & Reliability.Intel® Remote Platform Erase (RPE) ‡'
+	and Value = 'Yes'
+) IntelProductsWithIntelBootGuard
+on Products.ProductType = IntelProductsWithIntelBootGuard.ProductType
+and Products.ProductBrand = IntelProductsWithIntelBootGuard.ProductBrand
+and Products.ProductSerie = IntelProductsWithIntelBootGuard.ProductSerie
+and Products.Id = IntelProductsWithIntelBootGuard.ProductId;
+
+-- 16.	Which is the maximum Temperature Junction allowed by the 9th Gen Intel Core processor that has the greater number of cores?
+
+select 
+	Products.Name,
+	Products.Url,
+	ProductsWithMaxTJunction.Value as "Maximum Temperature Junction"
+from Products
+join (
+	select ProductsSpecifications.*
+	from ProductsSpecifications
+	join (
+		select distinct
+			ProductsSpecifications.ProductType,
+			ProductsSpecifications.ProductBrand,
+			ProductsSpecifications.ProductSerie,
+			ProductsSpecifications.ProductId
+		from ProductsSpecifications 
+		join (
+			select ProductType, ProductBrand, ProductSerie, max(Value::numeric) as "Max Total Cores"
+			from ProductsSpecifications P2
+			where (ProductType, ProductBrand, ProductSerie) in (
+				select ProductType, ProductBrand, Id as ProductSerie
+				from ProductSeries
+				where Name like '9th Generation Intel® Core™' || '%' || 'Processors'
+			)
+			and Specification = 'CPU Specifications.Total Cores'
+			group by ProductType, ProductBrand, ProductSerie
+		) MaxCoresBySeries
+		on ProductsSpecifications.ProductType = MaxCoresBySeries.ProductType
+		and ProductsSpecifications.ProductBrand = MaxCoresBySeries.ProductBrand
+		and ProductsSpecifications.ProductSerie = MaxCoresBySeries.ProductSerie
+		where Specification = 'CPU Specifications.Total Cores'
+		and Value::numeric = "Max Total Cores"
+	) ProductsWithMaxCores
+	on ProductsSpecifications.ProductType = ProductsWithMaxCores.ProductType
+	and ProductsSpecifications.ProductBrand = ProductsWithMaxCores.ProductBrand
+	and ProductsSpecifications.ProductSerie = ProductsWithMaxCores.ProductSerie
+	and ProductsSpecifications.ProductId = ProductsWithMaxCores.ProductId
+	and Specification = 'Package Specifications.TJUNCTION'
+) ProductsWithMaxTJunction
+on Products.ProductType = ProductsWithMaxTJunction.ProductType
+and Products.ProductBrand = ProductsWithMaxTJunction.ProductBrand
+and Products.ProductSerie = ProductsWithMaxTJunction.ProductSerie
+and Products.Id = ProductsWithMaxTJunction.ProductId;
+
+-- 17.	Which platforms are “Edge” enabled? (prepared for “Edge Applications”)
+
+select Name, Url
+from Products
+join (
+	select distinct ProductType, ProductBrand, ProductSerie, ProductId
+	from ProductsSpecifications
+	where value like '%' || 'Edge Enhanced' || '%'
+) IntelEdgeProducts
+on Products.ProductType = IntelEdgeProducts.ProductType
+and Products.ProductBrand = IntelEdgeProducts.ProductBrand
+and Products.ProductSerie = IntelEdgeProducts.ProductSerie
+and Products.Id = IntelEdgeProducts.ProductId;
+
+-- 18.	Which are the different Code Names?
+
+select distinct Value as "Code Names"
+from ProductsSpecifications
+where Specification = 'Essentials.Code Name'
+
+-- 19. Which are the different Intel GPUs?
+
+select Name, Url
+from Products
+where ProductType = (
+	select Id
+	from ProductTypes
+	where Name = 'Graphics'
+);
+
+-- 20. Which are the different Elkhart Lake Products?
+
+select Products.Name, Products.Url
+from Products
+join (
+	select distinct ProductType, ProductBrand, ProductSerie, ProductId
+	from ProductsSpecifications
+	where Specification = 'Essentials.Code Name'
+	and Value = 'Products formerly Elkhart Lake'
+) ElkhartLakeProducts
+on Products.ProductType = ElkhartLakeProducts.ProductType
+and Products.ProductBrand = ElkhartLakeProducts.ProductBrand
+and Products.ProductSerie = ElkhartLakeProducts.ProductSerie
+and Products.Id = ElkhartLakeProducts.ProductId;
diff --git a/rd.png b/rd.png
new file mode 100644
index 0000000..03211fa
Binary files /dev/null and b/rd.png differ
diff --git a/schema.sql b/schema.sql
index 70c55c6..29a9a2c 100644
--- a/schema.sql
+++ b/schema.sql
@@ -43,42 +43,20 @@ CREATE TABLE Products (
 	CONSTRAINT UQ_Product_Url UNIQUE (Url)
 );
 
-CREATE TABLE SpecificationCategories (
-	Id 		INT NOT NULL,
-	Name 	TEXT NOT NULL,
-	
-	CONSTRAINT PK_SpecificationCategories PRIMARY KEY (Id),
-	CONSTRAINT UQ_SpecificationCategories_Name UNIQUE (Name)
-);
-
-CREATE TABLE SpecificationProperties (
-	SpecificationCategory	INT NOT NULL,
-	Id 						INT NOT NULL,
-	Name 					TEXT NOT NULL,
-	
-	CONSTRAINT PK_SpecificationProperties PRIMARY KEY (SpecificationCategory, Id),
-	CONSTRAINT FK_SpecificationProperties_SpecificationCategories FOREIGN KEY (SpecificationCategory) REFERENCES SpecificationCategories (Id),
-	CONSTRAINT UQ_SpecificationProperties_Name UNIQUE (Name)
-);
-
 CREATE TABLE ProductsSpecifications (
 	ProductType 			INT NOT NULL,
 	ProductBrand 			INT NOT NULL,
 	ProductSerie 			INT NOT NULL,
 	ProductId				INT NOT NULL,
-	SpecificationCategory	INT NOT NULL,
-	SpecificationProperty	INT NOT NULL,
+	Specification			TEXT NOT NULL,
 	Value 					TEXT NOT NULL,
 	
-	CONSTRAINT PK_ProductsSpecifications PRIMARY KEY (ProductType, ProductBrand, ProductSerie, ProductId, SpecificationCategory, SpecificationProperty),
-	CONSTRAINT FK_ProductsSpecifications_Products FOREIGN KEY (ProductType, ProductBrand, ProductSerie, ProductId) REFERENCES Products (ProductType, ProductBrand, ProductSerie, Id),
-	CONSTRAINT FK_ProductsSpecifications_SpecificationProperties FOREIGN KEY (SpecificationCategory, SpecificationProperty) REFERENCES SpecificationProperties (SpecificationCategory, Id)
+	CONSTRAINT PK_ProductsSpecifications PRIMARY KEY (ProductType, ProductBrand, ProductSerie, ProductId, Specification),
+	CONSTRAINT FK_ProductsSpecifications_Products FOREIGN KEY (ProductType, ProductBrand, ProductSerie, ProductId) REFERENCES Products (ProductType, ProductBrand, ProductSerie, Id)
 );
 
 DROP TABLE ProductTypes;
 DROP TABLE ProductBrands;
 DROP TABLE ProductSeries;
 DROP TABLE Products;
-DROP TABLE SpecificationCategories;
-DROP TABLE SpecificationProperties;
 DROP TABLE ProductsSpecifications;