This document discusses several models and frameworks related to nursing informatics. It describes Graves and Corcoran's model which views nursing informatics as the linear progression from data to information to knowledge. It also outlines Schwirian's model focusing on identifying information needs and Turley's model defining nursing informatics at the intersection of nursing science, computer science, and information science. Additionally, it discusses the Data-Information-Knowledge model and Benner's Novice to Expert model as applied to nursing informatics. Finally, it introduces several specific models for the Philippine healthcare ecosystem, the patient medical record, and terminology standards.