Dao is one of microsofts models for accessing databases. Use the table of contents in the left navigation to view the topics in this section. The data access object in a computer software which is as an object which is responsible for providing abstract interface for communication to a specific form of database. Denver district court records are included in the colorado state courts data access program. Data access object pattern or dao pattern is used to separate low level data accessing api or operations from high level business services. Use a data access object dao to abstract and encapsulate access to business objects in the data source figure 1. Using dao for data access in your vb apps techrepublic. Data access object dao core j2ee patterns dinesh on java. Pdf implementing the data access object pattern using aspectj. Working with data access objects appendix c c w orking with d ata a ccess o bjects 5 if youre an access 2 developer, you might be wondering why the currentdbfunction is being recommended because it was marked as obsolete from access 1.
When it comes to implementing a data access solution in your vb applications, you currently have three choices. By mapping application calls to the persistence layer, the dao provides some specific data operations without exposing details of the database. Designing objectoriented software is hard, and designing reusable. This section of the access vba reference contains documentation for all the objects, properties, methods, and events contained in the access object model. Following are the participants in data access object pattern. In computer software, a data access object dao is an object that provides an abstract interface to some type of database or other persistence mechanism.