title: Spring batch DELETE BEFORE INSERT best practice?
body: <p>In a Spring Batch job, i need to code a DELETE before an INSERT in order to avoid primary key violations on already existing keys.</p>
  
  <p>What is the best practice regarding this need ?
  How and where should i implement this pre-requisited delete ?</p>
  
  <p>Thx in advance for your suggestions.
  :-)</p>