J2EE developers use the data access object (DAO) design mode to separate the underlying data access logic from the high-level business logic, so that the DAO mode can focus more on writing data access code.Let's first review the DAO design mode and
Background:The methods for accessing data vary depending on different data sources. Accessing persistent data sources, such as databases, varies with their storage types (relational databases, object-oriented databases, simple file storage, other
Dao (Database Access Object) uses the Microsoft Jet Database Engine to access the database.
Microsoft Jet provides data engines for products such as access and Visual Basic.
Like ODBC, Dao provides a set of APIS for programming. MFC also
DAO (Database access Object) uses the Microsoft Jet database engine to access the database.
Microsoft Jet provides a data engine for products such as access and Visual Basic.
Like ODBC, DAO provides a set of APIs for programmatic use. MFC also
SUN provides a set of database access specifications (that is, a set of interfaces) and protocol standards for database connection, then various database manufacturers follow SUN's specifications to provide a set of APIs to access their own database
Yii Learning Summary Data Access object (DAO), Yiidao
YII provides powerful database programming support. The Yii data Access Object (DAO) is built on the PHP data object (PDO) extension, making it possible to access different database management
This is the second article in The YII study summary series. It mainly introduces the Data Access Object (DAO), which is very detailed, if you need it, refer to this article. This is the second article in The YII learning summary series. It mainly
This is the second article in The YII study summary series. it mainly introduces the Data Access Object (DAO), which is very detailed, if you need it, refer to this article. this is the second article in The YII learning Summary Series. it mainly
This is the second article in The YII study summary series. it mainly introduces the Data Access Object (DAO), which is very detailed, if you need it, refer to this article. this is the second article in The YII learning Summary Series. it mainly
The Data Access Object (DAO) provides a common API for accessing data stored in different database management systems (DBMS. Therefore, when replacing the underlying DBMS with another one, you do not need to modify the code that uses DAO to access
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