Data access layer 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.
I'm trying to figure out if I'm using the DAO pattern correctly and, more specifically, how abstract db persistence should …
php design-patterns data-access-layerI looked through some related questions but still I don't see much difference between the a repository and a service …
java service repository data-access-layerI remember reading that one abstracts the low level calls into a data agnostic framework (eg. ExecuteCommand methods etc), and …
data-access-layerI have a filter object to query a table with many columns, and rather than write a condition covering all …
sql postgresql data-access-layer npgsqlWhen executing scripts in SQL Server Management Studio, messages are often generated that display in the message window. For example …
c# sql-server data-access-layer ssmsData Access Objects (DAOs) are a common design pattern, and recommended by Sun. But the earliest examples of Java DAOs …
architecture persistence data-access-layer jdo daoI'm creating a database access layer in native C++, and I'm looking at ways to support NULL values. Here is …
c++ data-access-layer nullableI just started programming in C# and was reading about dividing your application / website into the three different layers was …
c# data-access-layer layer presentationI have a repository layer that is responsible for my data-access, which is called by a service layer. The service …
c# data-access-layer n-tier-architecture dto service-layerI have an application which uses a database (MongoDB) to store information. In the past I have used a class …
java mongodb design-patterns dao data-access-layer