tailieunhanh - Accessing data with ADO.NET

Tham khảo bài thuyết trình 'accessing data with ', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Accessing data with Hà Đồng Hưng Objectives Introduction and other technologies Connected Objects Objects List Demonstrations Using Disconnected Objects in Disconnected Objects Objects List Demonstrations Using Disconnected objects in Objectives Introduction and other technologies Connected Objects Objects List Demonstrations Using Disconnected Objects in Disconnected Objects Objects List Demonstrations Using Disconnected objects in What is ? is a set of libraries included with the Microsoft .NET Framework that help you communicate with various data stores from .NET applications connecting to a data source submitting queries processing results Can also use as a hierarchical, disconnected data cache to work with data offline Why a new data access technology? Visual Basic 3 - Data Access Objects (DAO) designed to communicate with local file-based databases Visual Basic 4 - Remote Data Objects (RDO) a fast, . | Accessing data with Hà Đồng Hưng Objectives Introduction and other technologies Connected Objects Objects List Demonstrations Using Disconnected Objects in Disconnected Objects Objects List Demonstrations Using Disconnected objects in Objectives Introduction and other technologies Connected Objects Objects List Demonstrations Using Disconnected Objects in Disconnected Objects Objects List Demonstrations Using Disconnected objects in What is ? is a set of libraries included with the Microsoft .NET Framework that help you communicate with various data stores from .NET applications connecting to a data source submitting queries processing results Can also use as a hierarchical, disconnected data cache to work with data offline Why a new data access technology? Visual Basic 3 - Data Access Objects (DAO) designed to communicate with local file-based databases Visual Basic 4 - Remote Data Objects (RDO) a fast, lightweight data access layer designed to talk to larger server-based databases (SQL Server, Oracle ) Visual Basic 5 and Visual Studio 97 - ODBCDirect combine the power of RDO with the ease of use that DAO provides Visual Basic 6 and Visual Studio 6 - ADO a data access model we could use easily in server-side scripts (fewer lines of code, allow us to pass data structures from server to client and back) Drawbacks of older technologies Problems: Developers need to build more powerful applications work with XML data can pass ADO Recordset objects between different tiers in your application, but cannot combine the contents of multiple Recordset objects Recent versions of ADO added more XML features, but ADO will never handle XML data as efficiently as ) model is designed to help developers build efficient multi-tiered database applications across intranets and the Internet model The disconnected half of the object model do not communicate directly with .