Much of the world's data resides in databases. SQL (or Structured Query Language) is a powerful language which is used for communicating with and extracting data from databases. A working knowledge of ...

In a data warehouse, your solution integrates multiple sources of data in order to allow you to create analytical reports and analyze data. In some cases, a poorly designed data warehouse could cause ...

One of the earliest of the new generation of non-relational databases was CouchDB. CouchDB was born in 2005 when former Lotus Notes developer Damien Katz foresaw the nonrelational wave that only fully ...