what is Rails Active Record in Ruby on Rails?
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let me know what is ruby software and where and when it is usefull. Is it usefull to data base developer, if yes...where? thank you
what is Rails Migration?
When are self.up and self.down methods used?
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what is the log that has to seen to check for an error in ruby rails?
what is the naming convention in Rails?
What is the current version of ruby on rails?
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Explain how does rails implement ajax?