hibernate ref1

hibernate ref1

1. Entity name: can be used query.
2. Way of define mapping: xml, xdoclet, annotation.
3. Gerated properties: timestamp, version, and property can be generated. Types as follows :
never: default value.
always: generated when insert and update.
insert: only geneated when create data, won't change when updated it later.
4. Create db schema can be written in xml file.