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Getting Started with SimpleDB
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The SimpleDB web service APIthat you find withnumberdatabase products have intenexposes a small of database request typesThe myriad of configuration options other
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tionally been excludedThe SimpleDB API provides only nine operations, with the goal of enabling you to manage your data without requiring you to manage the database clusterThis chapter gets you up and running with these operations by developing several small applicationsThe chapter starts with some coverage of how to sign up for an accountThe sign-up process is simple and straightforwardThe expectation is that you have an account already or, if not, that you can easily make your way through the sign-up process without assistance However, questions about the account sign-up process do arise on occasion, so for completeness, some basic information is included
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Gaining Access to SimpleDB
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Like any Amazon Web Service, SimpleDB will only honor a request after it verifies that the request came from a valid accountWith SimpleDB, this means using your AWS account credentials to place a digital signature on your requestAs such, you will need to obtain the actual credentials firstThis section briefly walks you through the process of signing up with Amazon and requesting access to SimpleDB If you already have an existing AWS account with SimpleDB access, you can safely skip this section
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Creating an AWS Account
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An Amazon Web Services account is just an Amazoncom account with web services turned onThe account serves as the top-level unit of billing for all of your AWS usage You need to associate a credit card with your account before you can start using any of the web servicesAmazon maintains detailed usage data for your account throughout the month that you can monitor at the AWS websiteAt the end of each month,Amazon generates the final billing for your actual usage of each Amazon Web Service and charges your credit card
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2 Getting Started with SimpleDB
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To create an Amazon Web Services account, go to the AWS website ( ttp://aws h amazoncom) and click the link to create a new accountYou can use your existing Amazoncom account if you have one, or you can create a new account
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Signing Up for SimpleDB
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Once you successfully sign into your Amazon Web Services account, head over to the SimpleDB home page (http://awsamazoncom/simpledb) and click the sign-up button to add the new service If you do not yet have a credit card on file with Amazon, or if you have one but have not linked it to your web services account, you will be prompted for it now Go ahead and enter your informationYou cannot use any of the services without pre-authorizing a payment optionYou should be aware, however, that at the time of this writing,Amazon has a free access tier for SimpleDB usageThe current free tier terms allow for 25 hours of SimpleDB box usage, 1GB of data transfer, and 1GB of data storage per month before charges begin to accrueAlso, be aware that all data transfer from EC2 to SimpleDB is always free
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Managing Account Keys
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When you log into your Amazon Web Services account, you will be able to view your Account Access Identifiers For SimpleDB, this will be an Access Key ID and a Secret Access KeyThese will act as the username and signature generator for your SimpleDB requestsYou will pass the Access Key ID with every request to identify your accountYou prove the request is from you by computing a signature for each request using the Secret Access Key It is of the utmost importance that you keep your Secret Access Key a secretYour keys provide full access to your Amazon Web Services accounts Someone with your keys could corrupt or delete your data and rack up account usage charges to your credit card Keep security in mind, and do not post your secret key on any Internet forum, hard code it into shared source code, or include it in an email message that is not secureYou can generate a new Secret Access Key at any time from your account at the AWS website
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