Transaction

ACID -> Atomicity, Consitency, Isolation, Durability

pom.xml

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</artifactId>
			<version>5.2.19.RELEASE</version>
		</dependency>

root-context.xml

	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>		
			
	<tx:annotation-driven/>

method, class, interface 순으로 우선순위가 낮아짐