ORM/Hibernate_1 tutorials-interduction to hibernate
-- -- WHAT IS ORM& WHAT IS HIBERNATE ?
---------ORM IS THE OBJECT RELATIONAL MODEL WHICH HELP YOU SAVE DATA INTO DATABASE(PERSISTANCY LAYER) IN OBJECT FORMAT...IN ORM S THERE ARE DIFFERENT TYPE OF OBJECT RELATIONAL MAODEL TOOLS IN THAT HIBERNATE IS ONE TOOL.....
TOPLINK ,MYBATIS,JDO,HIBERNATE,ORMLITE........or tool orm principle
-----------WE ALREDY HAVE JDBC Y WE HAVE TO GO FOR THE ORM ?
1.JDBC STORE DATA IN FORM OF VALUE IN JAVA EVERY THING WE HAVE DEAL WITH WITH OBJECT ..HIBERNATE ILL STORE DATE IN DATA BASE AND RETRIVE DATA FROM DATABASE INTERMS OBJECT ONLY..
(intrenally it uses the jdbc...)
2.queries data base dependent hibernate hql separate query language hql
3.jdbc code in try catch finally other .....code will v no need of try catch hibernate exceptionsd are unchecked
4.tablestruclre remains same we cant save by jdbc
no hits to databse will be incre due to which a burden on data base.....
what is a frame work really ?
........bailorplate logic prebuilted code
......... implemnets or to hibernate
benfits?
1.hql no need data base
2.caching so number of hit database will be reduced
3.lazyloading
4.critria
5.locking
6.unchecked exceptions...