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Create and Verify a Domain in Amazon SimpleDB
The first step in storing data within Amazon SimpleDB is to create one or more domains.
Domains are similar to database tables, except that you cannot perform functions across multiple domains, such as querying multiple domains or using foreign keys. As a consequence, you should plan an Amazon SimpleDB data architecture that will meet the needs of your project.
All data that might be searched in a single query must be grouped using a single domain. For example, a web commerce application might contain a customer domain that contains all customer data (name, address, phone, and so on) and a products domain that contains all product information (name, description, price, cost, and so on).
![[Note]](images/note.png) | Note |
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Although the Amazon SimpleDB API does not perform queries across multiple domains, you can design your applications to perform queries across multiple domains. |
To create and verify a domain
Select Create Domain from the scratchpad Explore API list box.
The CreateDomain page displays.
Enter
MyStorein the Domain Name field.Click Invoke Request.
Amazon SimpleDB returns a response.
To verify the domain was created successfully, select ListDomains from the scratchpad Explore API list box.
The ListDomains page displays.
Click Invoke Request.
Amazon SimpleDB returns a list of all domains that belong to your account, including the newly created MyStore domain. The list is returned as an XML file with each domain identified within a
DomainNametag, and theDomainNametag is nested as follows:ListDomainsResponse>ListDomainsResult>DomainName. You can open the XML file in a Web browser to see the results.
![[Tip]](images/tip.png) | Tip |
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You can view the signed URL that the scratchpad uses to make the request by clicking Display Signed URL. You can also click Display String to Sign to view the string that the scratchpad uses to generate the authentication signature. |
