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Interview Questions
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mapping class hierarchy table per subclass
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Hibernate Tutorial,ORM-Hibernate-Best-FIT,Discussion
Author : Amit
Date (Year/Month/Date): 2009-02-18 ORM and Hibernate a comparison study

Hibernate can be used with
Java Application, or web
application or EJB Enterprise
application.

Hibernate requires
configuration file such as
hibernate.cfg.xml file, to
specify SessionFactory
attributes such as DataSource
, transaction factory,
transaction manager

This configuration file has all the object related HBM file reference.

Hibernate can be used in persistence layer, along with DAO (Data Access
Object) wrapper. Why DAO wrapper? to my understanding, it is always
advisable to hide any hibernate and SQL exception in DAO and provide
application with its own exception type.  This makes other layer like
business and presentation makes some sense of this exception, and by this
way we can achieve de coupling of persistence related implementation from
other layer.

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In future if some other better utility available to us, application should be able to grow and accept this utility with minimal impact in terms of code changes. ORM Object Relational Mapping tool, the name suggests that it is a tool that is providing a mapping between Java Object to RDBMS (Relational Database Management System). basically it provides a wrapper over all sorts of access to database, and provides some simple methods for Java developers to use, and these tools writes appropriate SQL (Structured Query Language) to persist data available in Java Objects to appropriate database tables, of course by looking at all the configurations / settings mentioned in respective configuration files. In todays enterprise world, only persisting data into database is not enough, these mapping tools should transparently be able to propagate transactions initiated by caller as well. And these ORM tools should be having some ways to perform better and scale too. Many ORM tools are available, out of these Hibernate is a Open Source ORM tool that is growing nicely and is accepted by wide customer base.
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This List is generated as on 2009-07-12 (YYYY-MM-DD)
#Discuss-these : questions-and-answer : Interview-Questions-on-Java
#Question-on-Session-Factory-Creation : SessionFactory : Hibernate-Tutorial
#On-Hibernate : Interview-Questions : Hibernate-Tutorial
#Example : mapping-class-hierarchy-table-per-subclass : Hibernate-Tutorial
#Example : ways-create-Hibernate-SessionFactory : Hibernate-Tutorial
#Example : Spring-Hibernate-Integration-example : Hibernate-Tutorial
#Discussion : ORM-Hibernate-Best-FIT : Hibernate-Tutorial
#Code : One-to-Many-mapping-example : Hibernate-Tutorial
#code : Many-to-Many-Mapping-Example : Hibernate-Tutorial
#discussion : Interview-questions-answer : Hibernate-Tutorial
#example-code : Interceptor-use-log-SQL-statements : Hibernate-Tutorial
#code : Class-Hierarchy-Persist-example : Hibernate-Tutorial
#discussion : Case-study-Hibernate : Hibernate-Tutorial
#With-Answer : Hibernate-Interview-Questions : Hibernate-Tutorial
#Discussed : Hibernate-Interview-questions-answer : Hibernate-Tutorial
#Question : Hibernate-Transaction : Hibernate-Tutorial
#Example-Case-study : Contextual-Session : Hibernate-Tutorial
#Design-with-example-code : Struts2-Hibernate : Hibernate-Tutorial
#Hibernate-query : Hibernate-Criteria : Hibernate-Tutorial
#Hibernate-Criteria-Example : Hibernate-Filter-Example : Hibernate-Tutorial
#Hibernate-Filter-Example : Hibernate-Filter : Hibernate-Tutorial
#Hibernate-Sample : Hibernate-many-to-one : Hibernate-Tutorial
#Hibernate-Sample-Example : Hibernate-named-query : Hibernate-Tutorial
#Composite-Primary-Key : Hibernate-Composite-Key : Hibernate-Tutorial
#Mapping-Example : Hibernate-one-to-one : Hibernate-Tutorial
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