The document discusses the integration of an application with Amazon Web Services' SimpleDB, highlighting its features as a non-relational, scalable database that supports incremental writes and low-cost operations. It provides detailed information on how to connect an Android application to SimpleDB, including creating domains, inserting records, and retrieving data using SQL-like queries. The document also compares the use cases for Android's internal SQLite database versus leveraging the cloud database, emphasizing factors such as data size, access requirements, and authentication.

1. Integrating an App with Amazon Web Services SimpleDB “ A Matter of Choices” Presented by Mark Maslyn – mmaslyn@msn.com

2. Amazon Web Services Menu

3. Amazon Web Service Databases RDB (Relational Database) S3 (Large Object Database) SimpleDB (NoSQL Database)

4. Amazon SimpleDB NoSQL Database – Non Relational Distributed - Highly Scalable, Highly Reliable, Incremental Writes Primarily for Database Reads RESTful Calls Passing Credentials and Query Very Low Cost – First 25 Hours Free Each Month.

5. SimpleDB Language Support

6. Whoa… Non – Relational ??? From WikiMedia Commons

7. NoSQL Databases Use “Domains” Instead of “Tables” Don’t Have Fixed Schemas – Easily Add or Remove Columns Variable Number of Fields per Record (Row) Each Record is a List of Name / Value Pairs Everything is a String Record Indexed By A Unique Item ID Implements Most SQL Calls Maintained By Amazon Web Services

8. Android to Amazon Database Model Android Phone For UI and Display Amazon SimpleDB Cloud For Database Heavy Lifting Data Request Data Response Each Does What It Does Best ! Images From HTC and WikiMedia

9. Remote Database Example: Kooaba From www.kooaba.com

10. Kooaba Architecture From www.kooaba.com

11. My Application – Oil Well Information Location (Latitude / Longitude) Well Status Land Survey Boundaries Must Have the Ability to “Drill Down” for More Information

12. Drilling For Oil Amount of Data Generated Depends On How Deep the Well is Drilled A B C D

13. Example NoSQL Row For Geologic Formation Names and Depths Item Key “ 05-10123”, “BLAINE”, “1464”,”ATOKA”,”4744”,”MORROW”,”4854” Name3 Name2 Name1 Value1 Value2 Value3

14. Coding the Connection From Android Image From http://www.vpnchoice.com/blog/wp-content/uploads/2011/06/android-vpn-300x187.jpg

15. Connecting to Amazon SimpleDB private static AmazonSimpleDB sdb = null; public static AmazonSimpleDB getInstance() { if ( sdb == null ) { // pass in the authenication credentials sdb = new AmazonSimpleDBClient( AWSDemo.credentials ); // set the node we want to use sdb.setEndpoint("sdb.us-west-1.amazonaws.com"); } return sdb; }

16. Creating SimpleDB Domains From Android public void createDomain(String domainName) { sdb.createDomain( new CreateDomainRequest(domainName)); }

17. Inserting Records From Android // each row is keyed with a “replaceable” item id followed by // attributes i.e. name / value pairs // construct a list of items to be inserted List<ReplaceableItem> dataList = new ArrayList<ReplaceableItem>(); // populate the list using the item id and the attribute name / value pairs dataList.add( new ReplaceableItem(“05-123”).withAttributes( new ReplaceableAttribute(DBFields. STATE , “CO”, true ), new ReplaceableAttribute(DBFields. COUNTY , “Weld”, true ), new ReplaceableAttribute(DBFields. DRILLING_DATE , “05-11-2011”, true )); // batch insert the list into the SimpleDB database sdb.batchPutAttributes( new BatchPutAttributesRequest( “my_domain” , dataList ));

18. Retrieving Data From Amazon // build your SQL select statement String selectExpression = &quot;select * from &quot; + domain + &quot; where itemName() = '“05-123’”; // construct a select request SelectRequest selectRequest = new SelectRequest(selectExpression); // retrieve a list of matching items (records) List<Item> itemList = sdb.select(selectRequest).getItems(); // loop through each record and extract the attributes from each item for ( int i = 0; i < itemList.size(); i++) { Item item = (Item) itemList.get(i); ArrayList<Attribute> attributeList = (ArrayList<Attribute>) item.getAttributes(); }

19. Question: Since Android Devices Can Use the Internal SQLite Database… When I Would I Use the Internal Database and When Would I Use the Amazon Cloud Database ?

20. Size of Your Database – Size Does Matter APK Maximum of 30 MB – Cloud Unlimited Whether the Data is Static or Subject to Change Whether You Need an Internet Connection For Access Whether You Require Authentication It Depends On…

21. My Choices: Local vs. Remote Android SQLite Database 100,000 Colorado Wells Latitude Longitude Status Value 4 MB 54 Colorado Counties Land Survey Information 12 MB Amazon SimpleDB 100,000 Colorado Wells Detailed Well Information 21 MB LOCAL REMOTE

22. Locally Stored Data Well Type / Location Land Grid

23. Authentication as part of RESTful Model Drill Down – Provide More Detailed Information No Limit on Amount of Data Accessible Internet (Remotely) Accessed Data

24. For Further Information Amazon Web Services For SDK’s, Tutorials, Case Studies and Sample Code : http://aws.amazon.com Mark Maslyn: [email_address]