How alfresco interacts with data

Alfresco uses datasource to perform database operations.

Datasource is the only way for alfresco to operate data.

Datasource corresponds to sessionfactory of hibernate. ibatis is not considered here.

Configurations or services related to sessionfactory include:

Patch-services-context.xml
Attributes-service-context.xml
Authentication-services-context.xml
Avm-services-context.xml
Bootstrap-context.xml
Hibernate-context.xml
Node-services-context.xml
Workflow-context.xml

Remove non-core applications with four key configurations:
Attributeservice for attributes-service-context.xml
Avm-services-context.xml l corresponds to avmservice
Node-services-context.xm corresponds to nodeservice, user session management
Hibernate-context.xml, which is the core part of data operations