Non-relational db, which one is the right choice...

How can I run queries like "within five days" on time series data?...

A Read-Only Relational Database on Google App Engine?...

Is my db schema okay for usage with Mongo?...

Non-relational database modeling tool?...

Non relational database design with SQL Server?...

Databases non-ORM and Scala...

Google App Engine many-to-many to self...

What's needed to develop a database in the cloud?...

SimpleDB to ActiveResource. Rails...

representing a many-to-many relationship in couchDB...

Is it easy to switch from relational to non-relational databases with Rails?...

SimpleDB as the main database, examples...

recommendation of a Non-relational database with Ruby on Rails?...

What is an example of a non-relational database? Where/how are they used?...

How would you represent a relational entity as a single unit of retrievable data in BerkeleyDB?...

Database Question: Change Simple Relational Tables to Non-Relational?...