... protect against data loss or corruption. Relational databases are the most• Chapter 1: Introducing JavaDataAccess Development 4Table of ContentsPart I: Getting Started with JavaDataAccess 1Chapter ... Introducing JavaDataAccessDevelopment 2In This Chapter 2Taking Stock of Enterprise Data Stores 2Database systems 4Naming and directory services 5XML services 6Introducing JavaDataAccess ... and Data Types 110 Java to−JDBC Data Type Mappings 111JDBC−to JavaData Type Mappings 114Standard SQL data types 114Advanced SQL data types 118iiTable of ContentsChapter 17: Building Data centric...
... I: Getting Started with JavaDataAccess 1Chapter List 1Chapter 1: Introducing JavaDataAccessDevelopment 2In This Chapter 2Taking Stock of Enterprise Data Stores 2Database systems 4Naming ... against data loss or corruption. Relational databases are the most• Chapter 1: Introducing JavaDataAccess Development 4JDBC 3.0, which provides support for accessing relational databases• ... to interact with data. Fortunately Java has thisability. It provides numerous APIs that help you access the different types of data stores. Figure 1−2 showsthe role JavaDataAccess Technologies...
... OpenDatabase: Set database = OpenDatabase (dbname, options, read-only, connect) Ý nghĩa các tham số của phương thức OpenDatabase như sau: Thành phần Ý nghĩa database Biến kiểu đối tượng Database ... cơ sở dữ liệu. II.1.1 Sử dụng phương thức OpenDatabase để tạo một đối tượng Database Ta dùng phương thức OpenDatabase để cho phép một đối tượng Database tham khảo đến một cơ sở dữ liệu cụ thể, ... trả về là một đối tượng Database, vì vậy trước khi sử dụng phương thức này, ta cần khai báo một đối tượng Database. Chẳng hạn như: Dim db As Database Set db = OpenDatabase(" \ \baigiang.mdb")...
... CHAPTER 8 ■ DATAACCESS LAYER 174 private void DisconnectFromDatabase() { if (_databaseConnection.State != ConnectionState.Open) { _databaseConnection.Close(); } } private IDataReader ... CreateUserFromReader(IDataReader dataReader) { int id = dataReader.GetInt32(0); string name = dataReader.GetString(1); string emailAddress = dataReader.GetString(2); string password = dataReader.GetString(2); ... Listing 8–5). Listing 8–5. Access a User by Name Using Both Syntaxes DataContext dataContext = new DataContext(connection); // LINQ style var matchingUsers = from user in dataContext.Users where...
... ■ DATAACCESS AND NETWORKING 147 < ;data: DataGrid x:Name="grdData" Margin="15" AutoGenerateColumns="False"> < ;data: DataGrid.Columns> < ;data: DataGridTemplateColumn ... to accessdata remotely. As noted earlier in chapter in the section DataAccess in Silverlight Applications”, this is one of the most common approaches to data access with Silverlight. Accessing ... Grid.Column="1" /> </Grid> </DataTemplate> < /data: DataGridTemplateColumn.CellTemplate> < /data: DataGridTemplateColumn> < ;data: DataGridTextColumn Header="Nickname"...
... DescriptionSystem .Data. Common.DbDataAdapter This class is used to fill a DataSet class with data from arelational database.System .Data. DataSet An in-memory representation of a database that cancontain ... 223system .data windowssystem.webServermscorlibsystem .data. oledbsystem .data. oracleclientsystem .data. sqlclientconfigProtectedDatasatelliteassembliessystem .data. datasetstartupsystem .data. odbcsystem.diagnosticsruntimesystem.codedomsystem.runtime.remotingconnectionStringsassemblyBindingappSettingssystem.windows.formsThis ... Microsoft.Practices.EnterpriseLibrary .Data let opener commandString =let database = DatabaseFactory.CreateDatabase()database.ExecuteReader(CommandType.Text, commandString)CHAPTER 9 ■ DATA ACCESS 2237575Ch09.qxp...
... same data access technologies as that of the nontransactional DAL. The following data access technologies were covered in Module 8, “The Nontransactional Data Access Layer”: ! Microsoft Data ... modules that focus on the dataaccess layer (DAL). In Module 8, “The Nontransactional DataAccess Layer,” you learned about data retrieval. In this module, you will learn about data manipulation. ... DAL: Module 8, “The Nontransactional DataAccess Layer” and Module 9, “The Transactional DataAccess Layer.” The DAL is an application’s means of access to data services. After completing this...
... System .Data. SqlTypesSystem .Data. SqlTypes..––CCááccllớớppcơcơbbảảnntrongtrongSystem .Data System .Data : : DataSetDataSet, , DataTableDataTable, , DataRowDataRow, , DataColumnDataColumn, , DataRelationDataRelation, Constraint, Constraint––CCááccllớớppđđặặccbibiệệtt: ... OverviewUsing Database ConnectionsUsing Database ConnectionsCommandsCommandsQuick Data Access: The Data ReaderQuick Data Access: The Data ReaderWorking with Working with DataSetDataSetViewing ... ccủủaa data set data set Data Access and Viewing with .NET Data Access and Viewing with .NET -- Editor:Editor: Đo Đoààn Quang Minhn Quang Minh88Quick Data Access: The Data...
... BLANK 74 Activity 9.4: Identifying DataAccess Requirements Exercise 1: Identifying a DataAccess Method for a Scenario (10 minutes) ! Identify dataaccess requirements 1. Participate ... easy access in the future. Solution A B Activity 9.4: Identifying DataAccess Requirements In this activity, you will first identify the optimal dataaccess ... Next, you will analyze the dataaccess method selection in a scenario. Objectives After completing this activity, you will be able to: ! Identify the appropriate dataaccess method for a given...
... providers A data provider is any component that owns data. It exposes its data in a tabular format, regardless of the format in which it stores data. Examples of data providers are relational database ... nontransactional data access layer (DAL). Module 8 is the first of two modules that focus on the DAL: Module 8, “The Nontransactional DataAccess Layer” and Module 9, “The Transactional DataAccess ... that accesses an Access database. In our Enterprise Architecture, the consumer would be the DAL. Providers There are two types of OLE DB providers: data providers and service providers. ! Data...
... Universal DataAccess with ADO 2.5 1 #### Overview !Using ADO 2.5!Retrieving Data from a Database!Lab 7.1: Using ADO Commands Efficiently!Accessing Web Data !Lab 7.2: Accessing Data ... to retrieve and view data from a Web site. Module 7: Universal DataAccess with ADO 2.5 31 #### Accessing Web Data !Using the Internet Publishing Provider !Accessing Web Resources ... know how to access relational data by using previous versions of ADO. The module focuses on learning how to access databases efficiently in an enterprise solution and how to access Web data by...
... Identifying DataAccess Considerations In this exercise, you will identify and group the factors to be considered for accessing data in a set of scenarios. ! Identify dataaccess considerations ... the data stores and list them in the first column of the following table. 3. For each data store, list the dataaccess considerations that have the greatest effect in determining a dataaccess ... List the primary considerations for choosing a dataaccess technology. ! Evaluate potential dataaccess issues and choose the appropriate dataaccess method for a given scenario. Before...
... same data access technologies as that of the nontransactional DAL. The following data access technologies were covered in Module 8, “The Nontransactional Data Access Layer”: ! Microsoft Data ... DAL: Module 8, “The Nontransactional DataAccess Layer” and Module 9, “The Transactional DataAccess Layer.” The DAL is an application’s means of access to data services. After completing this ... Transactional DataAccess Layer Distributed Transactions MS DTCMS DTCUPDATE UPDATE For complex transactions that involve data modifications on multiple rows in multiple tables on databases...