Amazon RDS vs. Amazon SimpleDB vs. Azure SQL Database vs. WinSQL Comparison Chart

Amazon SimpleDB is a highly available NoSQL data store that offloads the work of database administration. Developers simply store and query data items via web services requests and Amazon SimpleDB does the rest. Unbound by the strict requirements of a relational database, Amazon SimpleDB is optimized to provide high availability and flexibility, with little or no administrative burden. Behind the scenes, Amazon SimpleDB creates and manages multiple geographically distributed replicas of your data automatically to enable high availability and data durability. The service charges you only for the resources actually consumed in storing your data and serving your requests. You can change your data model on the fly, and data is automatically indexed for you. With Amazon SimpleDB, you can focus on application development without worrying about infrastructure provisioning, high availability, software maintenance, schema and index management, or performance tuning.

WinSQL is a powerful universal database management tool that is used by 90 percent of Fortune 500 companies and more than a million programmers and DBAs around the globe. WinSQL is a generic querying tool that connects to any relational database (RDBMS) for which an Open Database Connectivity (ODBC) driver is available, virtually all RDBMS on the market today. Connect to a variety of databases, including: heavy duty vendors Oracle, MS SQL Server, DB2, Sybase, Informix to lightweight backends like MS Access, DBase, and Text File. Generate royalty-free executables that can be used by your business users to run queries. These can be either static or dynamic queries that pull fresh data from the back-end. Export or simply open any query results into MS Excel with just a click of your mouse. You can even import an existing Excel spreadsheet to a database table by simply dragging an *.XSL file in the catalog tree.