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In software, a data access object (DAO) is a pattern that provides an abstract interface to some type of database or other persistence mechanism. By mapping application calls to the persistence layer, the DAO provides data operations without exposing database details.
Doctrine 1.x follows the active record pattern for working with data, where a class corresponds with a database table. For instance, if a programmer wanted to create a new "User" object in a database, they would no longer need to write SQL queries, but instead could use the following PHP code:
Pages in category "Articles with example PHP code" The following 35 pages are in this category, out of 35 total. This list may not reflect recent changes. A.
DAO were originally called "VT Objects.: DAO 1.0 came up in November 1992 as part of Access 1.0. In version 3.5 it was able to bypass the Jet engine all together and directly access ODBC data sources, including Microsoft SQL Server and other enterprise database systems. DAO 3.6 shipped with Jet 4.0.
In the field of programming a data transfer object (DTO [1] [2]) is an object that carries data between processes.The motivation for its use is that communication between processes is usually done resorting to remote interfaces (e.g., web services), where each call is an expensive operation. [2]
Prior to PHP version 5.3.0, functions are not first-class functions and can only be referenced by their name, whereas PHP 5.3.0 introduces closures. [35] User-defined functions can be created at any time and without being prototyped. [ 35 ]
CakePHP ORM (object-relational mapping) is an advanced PHP hybrid of the active record pattern and the data mapper pattern, borrowing core concepts from both. The CakePHP ORM uses two primary object types, the table class representing database tables , and entity classes representing individual table rows .
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