Multiple choice technology web technology

Your application will be fetching data from a centralized relational database, LDAP repositories and flat files.___________ design pattern will be appropriate for it.

  1. Business Delegate

  2. Data Access Object

  3. Factory

  4. Builder
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Data Access Object pattern is ideal when accessing multiple heterogeneous data sources. Each data source type (relational database, LDAP, flat files) gets its own DAO implementation exposing a common interface. The application code works with the DAO interface, remaining unaware of underlying storage differences. Business Delegate reduces coupling, Factory creates objects, and Builder constructs complex objects; none address multi-source data access.

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