Showing posts with label DataBases. Show all posts
Showing posts with label DataBases. Show all posts

Sunday, November 25, 2012

Accents in javascripts

In the following link, we can see the codes we have to use to put accents and special characters in javascripts:

http://www.pjb.com.au/comp/diacritics.html

It is extremely easy and useful.

Friday, September 28, 2012

NoSQL and MapReduce

NoSQL is a wide variety of database systems that differ of the classical RDBMS based on SQL.

MapReduce is a framework that provides high performance in solving problems in a parallel way of computers, servers, clusters...

Here there is an interesting presentation about NoSQL and MapReduce: http://www.slideshare.net/j_singh/nosql-and-mapreduce

And here a popular NoSQL Databases web page: http://nosql-database.org/

The CAP theorem says that, for a distributed system, it is impossible to simultaneously provide the following guarantees:
  • Consistency
  • Availability
  • Partition tolerance