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DAO Dispatcher Pattern: A Robust Design of the Data Access Layer

Authors:
Pavel Mička
Zdeněk Kouba

Keywords: data-access; software design; pattern; object-oriented; architecture; software evolution

Abstract:
Designing modern software has to respect the necessary requirement of easy maintainability of the software in the future. The structure of the developed software must be logical and easy to comprehend. This is why software designers tend to reusing well-established software design patterns. This paper deals with a novel design pattern aimed at accessing data typically stored in a database. Data access is a cornerstone of all modern enterprise computer systems. Hence, it is crucial to design it with many aspects in mind – testability, reusability, replaceability and many others. Not respecting these principles may cause defective architecture of the upper layer of the product, or even make it impossible to deliver the product in time and/or in required quality. This paper compares several widely used data access designs and presents a novel, robust, cheap to adopt and evolutionary approach convenient for strongly typed object oriented programming languages. The proposed approach makes it possible to exchange different data access implementations or enhance the existing ones even in runtime of the program.

Pages: 1 to 6

Copyright: Copyright (c) IARIA, 2013

Publication date: May 27, 2013

Published in: conference

ISSN: 2308-3557

ISBN: 978-1-61208-276-9

Location: Valencia, Spain

Dates: from May 27, 2013 to June 1, 2013