17 lines
481 B
Markdown
17 lines
481 B
Markdown
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---
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layout: pattern
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title: Data Access Object
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folder: dao
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categories: pattern_cat
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tags: pattern_tag
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---
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**Intent:** Object provides an abstract interface to some type of database or
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other persistence mechanism.
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**Applicability:** Use the Data Access Object in any of the following situations
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* when you want to consolidate how the data layer is accessed
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* when you want to avoid writing multiple data retrieval/persistence layers
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