MySQL · ruby · Ruby On Rails

Count, Size & Length methods. Which one to use where? What’s the difference between these?

Even the experienced developers will struggle to answer this correctly. Where to use count method? Where to use size method? Where to use length method? What is the difference among these? What is the advantages/disadvantages of using this? Which one is effective in using which areas? etc…, Find the answer below for the above questions… Continue reading Count, Size & Length methods. Which one to use where? What’s the difference between these?

MySQL

Trigger

A database trigger is procedural code that is automatically executed in response to certain events on a particular table or view in a database. The trigger is mostly used for keeping the integrity of the information on the database. For example, when a new record (representing a new worker) is added to the employees table,… Continue reading Trigger