Image
EAN-139780749629533   EAN-13 barcode 9780749629533
Product NameA Drop Of Water: A Book Of Science And Wonder
LanguageEnglish
CategoryBook / Magazine / Publication
Amazon.comA Buy on Amazon ~ 0590221973
SKUACOMMP2_BOOK_USEDVERYGOOD_0749629533
Price New8.76 US Dollars    (curriencies)
Price Used4.30 US Dollars    (curriencies)
Width9.25 inches    (convert)
Height12 inches    (convert)
Length0.5 inches    (convert)
Weight16.8 ounces    (convert)
AuthorWalter Wick
Page Count40
BindingHardcover
Published04/01/1997
FeaturesScholastic Press
Long DescriptionSuitable for National Curriculum Key Stage 2, a title in the NATURE AND SCIENCE series which looks at the everyday wonders of the natural world, and provides suggestions for exploring the natural world. Illustrated with colour photographs.
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Modified10-09-2017 1:06:23am
MD510b1727172b90e38471f1c8a3d90ea03
SHA25623d8d95db0e7629359ab9ecbfa379c648d45bbbf6546812ec76e1ff34ef4e8cb
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Article of interest

The extra items are numerically indexed and provide extra text to go along with numeric values such as weights or distances or even currencies. The attributes that use these extra indexes are all numeric and take two fields. You can send the data in a single field as long as you use the same short or long text that we keep in our database.

Although the data feed API can deliver information as JSON or XML, we are using XML here because it is easier to read.

<attribute>
   <extra_group>Distance</extra_group>
   <field_name>depth</field_name>
   <extra>
      <id>501</id>
      <extra_short>in</extra_short>
      <extra_long>inches</extra_long>
      <seq>10</seq>
   </extra>
   <extra>
      <id>503</id>
      <extra_short>ft</extra_short>
      <extra_long>feet</extra_long>
      <seq>20</seq>
   </extra>
   <extra>
      <id>505</id>
      <extra_short>yrd</extra_short>
      <extra_long>yards</extra_long>
      <seq>30</seq>
   </extra>
</attribute>

Looking at this example, you can see that the EXTRA portion is an array of values each with their own properties. Here is what each section means:

This extra information is normally used in a drop down box next to the numeric data field that we want to enhance. Some examples might be:

You see we can display the long or short version of the extra code by using the ID index.

Fields that make use of this extra information require it when pushing data back to us in the feed. You can either send the data in two fields (value and extra_id) or in a single field (value) as long as the text following the numeric portion matches the long or short version of the extra data we store for the field.

For example, if you wanted to update a field that represented distance with the value "100 yards", you could either send that data just like that in the value field value=100+yards or in two seperate fields value=100&extra_id=505 and you would get the same results. If you send an invalid extra_id or text after the number that doesn't match our accepted list, your update would be rejected.

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