Whenever we have a problem, call a trusted friend who knows the subject, to have it resolved quickly. In this age in which we live, time is a precious commodity. Well, Chaxpert born, the social network where you will find experts who will solve any of our more existential questions.
I recently got the case of a company, in which there is a computer that makes POS functions, besides being used for email, internet browsing, and other administrative tasks. One day, suddenly (how are you things can happen), the computer stopped working. After taking it to a service ... Continue reading
NOTE: This entry is extracted from a note posted on my facebook profile on March 20, 2009 The classic structure of relational databases allows us to establish relations 1:1, 1: N and N: M (plus the reflective ) between tables, this was a big improvement over the foundations of hierarchical data ... Continue reading
NOTE: This entry is extracted from a note posted on my facebook profile the December 3, 2009 What is a multi-table query? As the name suggests is a SQL query that requires several tables to obtain the results, as an example we have a imagenimos tabal containing the post of a ... Continue reading