This step is equivalent to indexing a field in an relational database. MapReduce is an efficient and highly scalable method of working with large datasets in a distributed database.
These are the basic steps, which I’ll expand upon in this article: A list function works alongside Cloudant MapReduce to let you output a Cloudant database in the format of your choice. You could write your own converter code on the the client side, but why not configure Cloudant to output data directly to other formats using a List Function. Perhaps you need to crunch some data in a spreadsheet, import data into your calendar, or aggregate data in an RSS reader. There are some circumstances, however, where you need to present your data in a format other than JSON. You can access IBM Cloudant’s NoSQL database from any programming language because of its RESTful HTTP API and JSON data format. Export Cloudant JSON as CSV, RSS, or iCal 🔗
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