Hstore basically gives you a schema-less data store in your PostgreSQL DB. This allows you to store the Hash in a Database column. If you want to query Model records, it is very difficult if you use Serialize to store dynamic attributes. Hstore acts same as Serialize but we can additionally query the model records using […]
An Introduction to Web Crawling using Ruby and Nokogiri
Web Crawling A web crawler is a program automated script that browses world wide web in methodical and automated manner.Key motivation for designing web crawlers has been retrieve web pages and add their representations to local repository. Other less frequently used names of a web crawler are Bot ants automatic indexers worm Difference between […]
