Why do we use DAO?

Answer Posted / sk.bilal ahmed

Data Access Object is an important component in business
applications.It provides flexibility to change an
application's persistence mechanism over time without the
need to re-engineer application logic that interacts with
the Data Access Object tier

Is This Answer Correct ?    21 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is javaserver pages standard tag library (jstl)?

496


What are the component of java?

463


Why is java called object oriented?

511


What is jbutton in java?

500


How many types of constructors are there in java?

455






What is commit?

642


What is javamail?

530


What is front end technology in java?

472


What are the modules of j2ee?

510


What are the advantages of object-relational mapping (orm)?

481


for example we are login into the irctc server from there it will go to the selected bank and deduct amount and come back to the irctc. so if we are developing this in java means will it be run on the same session. but as per my knowledge bank is separate and irctc is separate URL's so it will use two different sessions then how it is maintaining same session through out application and even it uses the payment gateway? how it is working can any one help me on that??

3866


What do you understand by j2ee?

481


when i m calling java for web browser . so browser it's not support. show error in browser: internal error occur. java.lang.NoClassDefFoundError. will you give me solution why it's not starting browser.? is there any consult with .net framework2.0?

1559


What is jetty in java?

513


What is certificate authority?

570