Point of Sale ( POS ) Electronic Health Record ( EHR ) Electronic Medical Record ( EMR ) Systems Development Life Cycle ( SDLC ) HL7 Standards ANSI X12 Standards XML Interfaces Project Management Project Management Life Cycle ( PMLC ) LEAN Six Sigma Agile Scrum Just in Time ( JIT ) HITECH Business Systems Analysis Database Relational Database Management System ( RDBMS ) Health Care Informatics Data Interface and Exchange Systems Disease Registry