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- Data_access_layer abstract "A data access layer (DAL) in computer software, is a layer of a computer program which provides simplified access to data stored in persistent storage of some kind, such as an entity-relational database. This acronym is prevalently used in Microsoft ASP.NET environments.For example, the DAL might return a reference to an object (in terms of object-oriented programming) complete with its attributes instead of a row of fields from a database table. This allows the client (or user) modules to be created with a higher level of abstraction. This kind of model could be implemented by creating a class of data access methods that directly reference a corresponding set of database stored procedures. Another implementation could potentially retrieve or write records to or from a file system. The DAL hides this complexity of the underlying data store from the external world.For example, instead of using commands such as insert, delete, and update to access a specific table in a database, a class and a few stored procedures could be created in the database. The procedures would be called from a method inside the class, which would return an object containing the requested values. Or, the insert, delete and update commands could be executed within simple functions like registeruser or loginuser stored within the data access layer.Also, business logic methods from an application can be mapped to the Data Access Layer. So, for example, instead of making a query into a database to fetch all users from several tables the application can call a single method from a DAL which abstracts those database calls.Applications using a data access layer can be either database server dependent or independent. If the data access layer supports multiple database types, the application becomes able to use whatever databases the DAL can talk to. In either circumstance, having a data access layer provides a centralized location for all calls into the database, and thus makes it easier to port the application to other database systems (assuming that 100% of the database interaction is done in the DAL for a given application).Object-Relational Mapping tools provide data layers in this fashion, following the active record model. The ORM/active-record model is popular with web frameworks.".
- Data_access_layer wikiPageExternalLink ee658127.aspx.
- Data_access_layer wikiPageExternalLink creating-a-data-access-layer-cs.
- Data_access_layer wikiPageID "4159307".
- Data_access_layer wikiPageLength "2989".
- Data_access_layer wikiPageOutDegree "22".
- Data_access_layer wikiPageRevisionID "672455627".
- Data_access_layer wikiPageWikiLink ASP.NET.
- Data_access_layer wikiPageWikiLink Abstraction.
- Data_access_layer wikiPageWikiLink Acronym.
- Data_access_layer wikiPageWikiLink Active_record_pattern.
- Data_access_layer wikiPageWikiLink Category:Data_mapping.
- Data_access_layer wikiPageWikiLink Category:Databases.
- Data_access_layer wikiPageWikiLink Category:Object-oriented_programming.
- Data_access_layer wikiPageWikiLink Computer_program.
- Data_access_layer wikiPageWikiLink Data.
- Data_access_layer wikiPageWikiLink Data_access_object.
- Data_access_layer wikiPageWikiLink Database.
- Data_access_layer wikiPageWikiLink Database_abstraction_layer.
- Data_access_layer wikiPageWikiLink Entity_relationship.
- Data_access_layer wikiPageWikiLink Entity–relationship_model.
- Data_access_layer wikiPageWikiLink Field_(computer_science).
- Data_access_layer wikiPageWikiLink Layer_(object-oriented_design).
- Data_access_layer wikiPageWikiLink Microsoft.
- Data_access_layer wikiPageWikiLink Object-Relational_Mapping.
- Data_access_layer wikiPageWikiLink Object-oriented_programming.
- Data_access_layer wikiPageWikiLink Object-relational_mapping.
- Data_access_layer wikiPageWikiLink Object_(computer_science).
- Data_access_layer wikiPageWikiLink Persistence_(computer_science).
- Data_access_layer wikiPageWikiLink Persistent_storage.
- Data_access_layer wikiPageWikiLink Row_(database).
- Data_access_layer wikiPageWikiLink Table_(database).
- Data_access_layer wikiPageWikiLinkText "DAL".
- Data_access_layer wikiPageWikiLinkText "Data Access Layer".
- Data_access_layer wikiPageWikiLinkText "Data access layer".
- Data_access_layer wikiPageWikiLinkText "back end".
- Data_access_layer wikiPageWikiLinkText "data access layer".
- Data_access_layer wikiPageWikiLinkText "data layers".
- Data_access_layer hasPhotoCollection Data_access_layer.
- Data_access_layer wikiPageUsesTemplate Template:Reflist.
- Data_access_layer subject Category:Data_mapping.
- Data_access_layer subject Category:Databases.
- Data_access_layer subject Category:Object-oriented_programming.
- Data_access_layer hypernym Layer.
- Data_access_layer type AnatomicalStructure.
- Data_access_layer type Article.
- Data_access_layer type Article.
- Data_access_layer type Datum.
- Data_access_layer comment "A data access layer (DAL) in computer software, is a layer of a computer program which provides simplified access to data stored in persistent storage of some kind, such as an entity-relational database. This acronym is prevalently used in Microsoft ASP.NET environments.For example, the DAL might return a reference to an object (in terms of object-oriented programming) complete with its attributes instead of a row of fields from a database table.".
- Data_access_layer label "Data access layer".
- Data_access_layer sameAs Capa_de_acceso_a_datos.
- Data_access_layer sameAs m.0bmb12.
- Data_access_layer sameAs Veri_erişim_katmanı.
- Data_access_layer sameAs Q5227234.
- Data_access_layer sameAs Q5227234.
- Data_access_layer wasDerivedFrom Data_access_layer?oldid=672455627.
- Data_access_layer isPrimaryTopicOf Data_access_layer.