APPLICATION.PROPERTIES: In Spring Boot, configuration details are kept in the application.properties file .The application.properties is present under the classpath(file location src/main/resources ).The basic configuration properties like DB details, server port etc. is present in the application.properties file as given below – spring.datasource.url=jdbc:oracle:thin:@manoj:1521:orcl spring.datasource.username=tog spring.datasource.password=sci YAML File: Spring Boot supports YAML based properties configurations to run the application. Instead of application.properties we can use application.yml f...