Vmware interview questions and answers http://solarisinterview.blogspot.com/. A data entry operator is someone whos main function is to enter data into a computer. this function is not related to any particular sector and most of the time its. Hibernate Interview Questions and Answers for Java J2. EE Programmers. Hibernate Interview Questions are asked on Java J2. EE Interviews, mostly for web based enterprise application development role. Success and acceptability of Hibernate framework on Java world have made it one of the most popular Object Relational Mapping (ORM) solution in Java technology stack. Networking Interview Questions And Answers Pdf 2010 FormHibernate frees you from database- specific coding and allows you to focus more on utilizing powerful object oriented design principle to implement core business logic. By using Hibernate you can switch between database rather easily and also take advantage of out of box caching facilities provided by Hibernate, in terms of second- level cache and query cache. It also frees Java developer from writing JDBC code as Hibernate takes care of that. In short, provides a complete solution to implement DAO layer of your Java or JEE application. As you know most of Java interview not only contains questions from core Java but also from other Java framework e. Spring Framework or Struts interview questions, based upon projects requirements. It's good to prepare both Spring and Hibernate questions quite well if you are going to work on a project which uses Hibernate as ORM. Check JD or Job description ,and if you see word Hibernate anywhere, get ready to face some Hibernate questions. What is the difference between get and load in Hibernate? Hibernate Interview question, since correct understanding of both get() and load() is require to effectively using Hibernate. Main difference between get and load is that, get will hit the database if object is not found in the cache and returned completely initialized object, which may involve several database call while load() method can return proxy, if object is not found in cache and only hit database if any method other than get. Id() is called. This can save a lot of performance in some cases. You can also see a difference between get and load in Hibernate for more differences and detailed discussion on this question.
What is the difference between save, persist and save. Or. Update methods in Hibernate? After get vs load, this is another Hibernate Interview question which appears quite often. All three methods i. Or. Update() and persist() is used to save objects into database, but has subtle differences e. INSERT records but save. Or. Update() can either INSERT or UPDATE records. Also, the return type of save() is a Serializable object, while return type of persist() method is void. You can also check save vs persist vs save. Or. Updatefor complete differences between them in hibernate. What is named SQL query in Hibernate? This Hibernate Interview question is related to query functionality provided by Hibernate. Named queries are SQL queries which are defined in mapping document using < sql- query> tag and called using Session. Named. Query() method. Named query allows you to refer a particular query by the name you provided, by the way, you can define named query in hibernate either by using annotations or XML mapping file, as I said above. Name. Query is used to define single named query and @Name. Queries is used to define multiple named query in hibernate. See Java Persistence with Hibernate for more details. What is Session. Factory in Hibernate? Session. Factory thread- safe? Another common Interview questions related to Hibernate framework. Session. Factory, as the name suggest, is a factory to hibernate Session objects. Session. Factory is often built during start- up and used by application code to get session object. It acts as a single data store and it's also thread- safe so that multiple threads can use the same Session. Factory. Usually, a Java JEE application has just one Session. Factory, and individual threads, which are servicing client’s request obtain hibernate Session instances from this factory, that’s why any implementation of Session. Factory interface must be thread- safe. Also, the internal state of Session. Computer Networks Interview Questions Geek.
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