Interview Questions.

Top 100+ Ibatis Interview Questions And Answers


Top 100+ Ibatis Interview Questions And Answers

Question 1. What Is Ibatis ?

Answer :

A JDBC Framework
o  Developers write SQL, iBATIS executes it the use of JDBC.
O  No greater strive/seize/sooner or later/strive/capture.
An SQL Mapper
o  Automatically maps object houses to prepared statement parameters.
O  Automatically maps result units to objects.
O  Support for doing away with N+1 queries.
A Transaction Manager
o  iBATIS will offer transaction management for database operations if no other transaction supervisor is available.
O  iBATIS will use outside transaction management (Spring, EJB CMT, and many others.) if to be had.
Great integration with Spring, however can also be used without Spring (the Spring oldsters were early supporters of iBATIS).
Question 2. What Isn't Ibatis ?

Answer :

o Does no longer generate SQL
o Does now not have a proprietary question language
o Does now not realize about item identity
o Does now not transparently persist objects
o Does no longer construct an item cache
Essentially, iBatis is a very lightweight staying power answer that offers you most of the semantics of an O/R Mapping toolkit, without all of the drama. In other phrases ,iBATIS strives to ease the development of statistics-pushed applications via abstracting the low-stage information involved in database verbal exchange (loading a database driving force, acquiring and managing connections, dealing with transaction semantics, and many others.), as well as supplying higher-stage ORM capabilities (automated and configurable mapping of items to SQL calls, data type conversion management, support for static queries as well as dynamic queries based totally upon an object's state, mapping of complicated joins to complicated object graphs, and so forth.). IBATIS truly maps JavaBeans to SQL statements using a completely easy XML descriptor. Simplicity is the key benefit of iBATIS over other frameworks and item relational mapping equipment.

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Question 3. What Is Orm?

Answer :

ORM stands for Object Relations Mapping.

Question 4. Is Hibernate And Ibatis Can Be Used On One Application?

Answer :

Yes, But it's miles referred to as as whole Hybrid model. If application is already developed in Hiberante and if you want to acquire reporting moduels we will pass for ibatis.But such things in no way exists in JAVA patience international.

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Question 5. What Is The Difference Between Hibernate And Ibatis In Java?

Answer :

Hibernate and Ibatis both are the persistance frameworks.

Hibernate will aid for procedure invocations and to run normal sq. However it's far very hard to make it viable with a regular developer. Where as iBatis is simple to broaden and clean to name tactics and capabilities, no need to warfare for mapping and other things.

When we've got more than one joins and complicated queries in the software it will likely be hard obtain with Hibernate. But it is very easy to handle in Ibatis.

Hibernate works if we've very well data version is nicely in sync with item version, because ORM answers like Hibernate map objects to tables. If Object model isn't in sync with the records model, in this example we should do lot of extra coding and complexities are stepping into your application.

When utility turning into large and complex our version starts offevolved breaking down.

One length does now not fit all. In such instances i like to use iBatis.

Ibatis maps maps effects units to gadgets. So no want to care about desk systems. We can retrive the statistics the manner we need. This solution words very well for stored methods and works effectively for reporting programs etc…

Hibernate for each query end result we ought to have a corrosponding mapping object. Ibatis we are able to use Collection objects like Map, List or ArrayList.

Use Hibernate : Your environment is pushed with the aid of object version that's sync with records version and item model wants to generate queries automatially. It is bit complicated to put in force.

Use Ibatis: You have freedom to jot down your personal queries and smooth to keep. Your environment is pushed with the aid of relational version. You can work on present and complicated scemas. Easy to enforce.

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Question 6. Is Ibatis The Best Choice For My Project?

Answer :

iBATIS is a Data Mapping tool. Its position is to map the columns of a database question (inclusive of a saved manner) to the houses of an object. If your utility is based on enterprise items (together with Maps or IDictionary gadgets), then iBATIS may be an amazing choice. IBATIS is an even better preference when your software is layered, in order that that the enterprise layer is wonderful from the userinterface layer.

Under those circumstances, every other correct choice might be an Object/Relational Mapping tool (OR/M device), like Hibernate or NHibernate. (Other merchandise on this class are Apache ObjectRelationalBridge and Gentle.NET.) An OR/M device generates all or maximum of the SQL for you, both in advance or at runtime. These products are referred to as OR/M equipment due to the fact they try to map an object graph to a relational schema.

IBATIS is not an OR/M device. IBATIS helps you map gadgets to stored techniques or SQL statements. The underlying schema is beside the point. An OR/M tool is splendid if you may map your gadgets to tables. But they may be now not so tremendous if your objects are stored as a relational view rather than as a desk. If you can write a announcement or procedure that exposes the columns for your object, no matter how they're stored, iBATIS can do the rest.

So, how do making a decision whether or not to OR/M to DataMap? As continually, the nice recommendation is to put in force a consultant a part of your undertaking using both approach, and then decide.

But, in wellknown, OR/M is a superb issue when you

Have whole manipulate over your database implementation
Do now not have a Database Administrator or SQL guru on the group
Need to model the problem domain outside the database as an object graph.
Likewise, the satisfactory time to use a Data Mapper, like IBATIS, is when:

You do no longer have entire control over the database implementation, or need to maintain to get entry to a legacy database as it is being refactored.
You have database administrators or SQL authorities on the crew.
The database is being used to model the trouble domain, and the software’s number one function is assist the client use the database version.
In the cease, you have to decide what’s satisfactory to your task. If a OR/M tool works higher for you, that’s super! If your next mission has one-of-a-kind desires, then we are hoping you deliver iBATIS another look. 

Question 7. What Is A Business Process?

Answer :

By definition, a enterprise procedure is a series of responsibilities that takes vicinity in a repeatable order, achieved via human beings and/or systems to gain a enterprise goal. It describes the order (the use of a flowchart) in which a sequence of steps wishes to be achieved. A commercial enterprise system can appreciably improve the visibility and agility of a enterprise good judgment.

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Question 8. What Are The Features Of Jbpm?

Answer :

jBPM is a lightweight, open source, completely embeddable system engine written in Java. Its most incredible capabilities are listed under −

jBPM executes business tactics that are designed the use of the BPMN 2.Zero specifications.
JBPM may be fully included with Eclipse and similar IDEs to provide drag and drop assist to create a workflow.
JBPM has UI gear available to contain commercial enterprise analysts and users right from the layout segment.
JBPM supports patience and transaction control with the assist of JPA and JTA.
One can define custom paintings item handlers to create a user-described mission which may be used as a element afterward for other workflows.
Question nine. What Are The Prerequisites To Install Jbpm Plugin?

Answer :

The following are the Prerequisites to put in jBPM Plugin −

Java 1.Five (or better) SE JDK
Eclipse four.2 or any model and the jBPM plugin
As jBPM is written in Java, we will be covering a way to add the desired plugins.

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Question 10. What Are Jbpm5 Components?

Answer :

BPMS middle is the coronary heart of the BPM. The illustration depicts the BPMS core and its additives. 

The Semantic Module

The semantic module defines the language semantic (what every word approach) and how it will be translated for the process engine's internal structures which are geared up to be finished. This module essentially contains the necessities to recognize the BPMN2 language.

The Process Engine

The procedure engine is the one responsible for truly executing our enterprise processes. The method engine is in charge of creating new system times and retaining the nation for every of them. Inside the manner engine code, the inner systems are defined to symbolize each hobby that is in our system definitions. All the mechanisms which might be being used to instantiate these procedure definitions will execute them as defined inside the technique engine.

Persistence and Transactions

In maximum organisation packages, all the interactions should run internal a transaction boundary, and we have to deal with special systems, APIs, and designs. Also, we ought to have a flexible mechanism to outline −

How to handle long-going for walks strategies
How and when we can we store data about the process reputation and the statistics that the manner is managing
How and when we need to create, devote, or roll lower back the process engine transactions
Which enterprise exceptions can roll back or compensate already completed business moves
All the above factors are included with the aid of persistance and transactions component inside the jBPM.

Audit/History Logs

This module is in price of giving the person a manner to question about how our techniques are being completed. This statistics consists of ancient facts about strategies that have already ended and the modern-day information approximately the procedures which might be being achieved.

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