By Prabhakar Chaganti, Rich Helms
This ebook is a pragmatic real-world educational masking every little thing you must learn about Amazon SimpleDB. you'll come upon examples in 3 languages: Java, personal home page, and Python. This booklet is geared toward remodeling you from a newbie to a complicated developer. while you're a developer eager to construct scalable web-based database functions utilizing SimpleDB, then this publication is for you. you don't need to understand whatever approximately SimpleDB to learn and study from this e-book, and no uncomplicated wisdom is exactly valuable. This advisor may help you to begin from scratch and construct complicated purposes.
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Extra resources for Amazon SimpleDB Developer Guide: Scale your application's database on the cloud using Amazon SimpleDB
The previous version of SimpleDB only supported a query-style syntax that is now being deprecated in favor of the simpler and easier-to-use SELECT expressions. select("SELECT name FROM `prabhakar-dom-1` WHERE make='BMW'") >>> for result in rs: ... name ... car1 car2 >>> Multiple attributes can also be specified as a part of the query. select("SELECT name FROM `prabhakar-dom-1` WHERE make='BMW' AND model='X5'") >>> for result in rs: ... name ... car2 >>> [ 41 ] Getting Started with SimpleDB You can delete a specific item and all of its attributes from a domain.
When SDBtool starts for the first time, it is necessary to configure your Access Keys. Click on the Config button and enter your Access Key and Secret Key. There is also a checkbox that sets if the tool can delete a domain. If you are working on a production database, it is wise to leave this unchecked. A connection to your SimpleDB database will open in a new browser tab. The list of available domains will be listed in the domain area. [ 24 ] Chapter 2 The SDBtool screen is divided into four areas: This area is used to create or display domains.
Matching your criteria, using the SELECT syntax that is popular in the SQL world. The following diagram illustrates the different components of SimpleDB and the operations that can be used for interacting with them: How is SimpleDB priced? Amazon provides a free tier for SimpleDB along with pricing for usage above the free tier limit. 7 GHz Xeon processor. [ 13 ] Getting to Know SimpleDB Free tier As of the publication date of this book, there are no charges on the first 25 machine hours, 1 GB of data transfer, and 1 GB of storage that you consume every month.
Amazon SimpleDB Developer Guide: Scale your application's database on the cloud using Amazon SimpleDB by Prabhakar Chaganti, Rich Helms