Interested to Buy Any Domain ? << Click Here >> for more details...
What is need of DAO? Write one simple DAO example?
- 2 Answers
- 13864 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / naveen kumar v
DAO: Data Access Object. here the main concept of DAO is to
communicate with the database. DAO mainly contains
1.) DAOFactory: this specifies which kind of database
(wether MySQL or ORACLE or MSSQL etc...).
2.) SQLFactory: which extends the DAOFactory. Here we do
all the connection stuffs.deciding te driver, hostname,
URL, username, password etc and also getting the Connection
object.
3.) AdminDAO: this is a interface where we declare all the
methods which we need in our application to perform all the
database related operation.
4.) SQLAdminFactory: this implements the AdminDAO
interface, all its method. this also gets the connection
from SQLFactory.
5.) TransactionControlDAO: here we keep the commit and
roolback methods.
if required...
6) ConnectionConstant: in this file we can mention the file
name (.properties file) where we keep the connection
detals, like hostname, username, password, etc...
| Is This Answer Correct ? | 14 Yes | 4 No |
Answer / ankit
DAO(Data Access logic) provide the machanism to saperate our bussiness logic from data access logic and both code can be change independently that lead to flexibility in our application. and it also provide security because when will see spurce code from web page only the business logic can be seen and cant see the data access logic . and it also provide reusability
| Is This Answer Correct ? | 7 Yes | 0 No |
Which interface does java.util.hashtable implement?
Explain the OOPS concept in Realtime Scenarion ? Take example as CAR. Please explain indetail ?
Hi we have an urgent requirement for Java/J2ee technical lead position & also looking for "Java Guidewire claimcentre" experienced professional for Bangalore location if interested can reach srisanh@gmail.com
How is hashset maintained in memory by java ?
What is the difference between comparable and comparator in java.util pkg?
What are the different types of features of the java collections framework? : java collections
In HashSet duplicates are allowed while adding to the HashSet, but while retreiving the object from HashSet is not shown the duplicate values, WHY ?
Hi frnds how to lock an user when he enter wrong credentials more than 3 time using java or j2ee tech take username and password in a bean no need to connect DB and validate give me some sample application code or links its urgent for me thanks in advance
which book is the best for preparing for SCWCD 1.5
Is it possible to create Userdefined Unchecked Exception also?If Yes, give an example?
how to delete cookie information?and when it will delete?
what debugging tool that can be used to debug the java programs?
Core Java 
