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Design - Interview Questions and Answers for 'DAO' - 2 question(s) found - Order By Newest

 Q1. What is DAO ?
Ans. DAO is Data Access Object which is used within Persistence Layer to make Database Transaction. For example , the class holding the Database connection and CRUD methods.

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   Like         Discuss         Correct / Improve     DAO  Data Access Object      basic        frequent


Related Questions

 Is it a Good practice to have application decision making in DAOs ?
 How one dao Implementation object (singleton) can handle multiple requests?
 In Case of multi layered application, If DAO layer throws an exception , How will you handle it upstream ?


 Q2. Is it a Good practice to have application decision making in DAOs ?Design
Ans. No, DAO's should only have methods to perform CRUD operations. Application logic should reside in service methods.

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