wideband wireless packet data access

Performance study of air interface for broadband wireless packet access

... Broadband Wireless Packet Access Broadband wireless packet access should deliver much higher data transmission rates and provide more diverse services than current 2-3G systems All-IP wireless ... for broadband wireless packet access Therefore, the design of a new air interface for broadband wireless packet access has to take into account the fact that the dominant load in the wireless channels ... SUMMARY Broadband wireless packet access with an all-IP architecture has emerged as the preferred platform to deliver higher data rates and provide more diverse services than the current wireless systems...

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CÁC ĐỐI TƯỢNG TRUY CẬP DỮ LIỆU (DATA ACCESS OB

Danh mục: Kỹ thuật lập trình

... cần khai báo đối tượng Database Chẳng hạn như: Dim Set db As db = Database OpenDatabase(" \ \baigiang.mdb") Cú pháp đầy đủ phương thức OpenDatabase: Set database = OpenDatabase (dbname, options, ... OpenDatabase để tạo đối tượng Database Ta dùng phương thức OpenDatabase phép đối tượng Database tham khảo đến sở liệu cụ thể, đối số bắt buộc phương thức chuỗi, kết trả đối tượng Database, trước sử dụng ... đối tượng Database sau: Dim db As Database Đối tượng Database có nhiều phương thức, ta xét qua phương thức quan trọng cho phép ta thao tác với sở liệu II.1.1 Sử dụng phương thức OpenDatabase để...

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Data Access Layer

Danh mục: Kỹ thuật lập trình

... success; } 173 CHAPTER ■ DATA ACCESS LAYER private void DisconnectFromDatabase() { if (_databaseConnection.State != ConnectionState.Open) { _databaseConnection.Close(); } } private IDataReader ExecuteReadCommand(IDbCommand ... command) { IDataReader dataReader = null; if (_databaseConnection.State == ConnectionState.Open) { dataReader = command.ExecuteReader(); } return dataReader; } private User CreateUserFromReader(IDataReader ... repetition of database access code (see Listing 8–3) The NET Framework provides the ADO.NET services for accessing databases without tying code to a specific vendor The class will require a database...

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Data Access and Networking

Danh mục: Kỹ thuật lập trình

... CHAPTER ■ DATA ACCESS AND NETWORKING ... /> < /data: DataGridTemplateColumn.CellTemplate> < /data: DataGridTemplateColumn>

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Introduction to Data Access

Danh mục: Kỹ thuật lập trình

... INTRODUCTION TO DATA ACCESS Listing 5-7 Saving the Registration of a New Player private NewsletterSubscriptionDataAccess subscriptionDataAccess; private MembershipDataAccess membershipDataAccess; public ... java.sql.SQLException; public class NewsletterSubscriptionDataAccess { private DataSource dataSource; public void setDataSource(DataSource dataSource) { this.dataSource = dataSource; } public void addNewsletterSubscription(int ... NewsletterSubscriptionDataAccess subscriptionDataAccess; public void subscribeMemberToNewsletter(Member member, String email) throws MyDataAccessException { subscriptionDataAccess.addNewsletterSubscription(member.getId(),...

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Data Access

Danh mục: Kỹ thuật lập trình

... CHAPTER I DATA ACCESS system .data windows system.webServer mscorlib system .data. oledb system .data. oracleclient system .data. sqlclient configProtectedData satelliteassemblies system .data. dataset ... Page 229 CHAPTER I DATA ACCESS Class Description System .Data. Common.DbDataAdapter This class is used to fill a DataSet class with data from a relational database System .Data. DataSet An in-memory ... Page 230 CHAPTER I DATA ACCESS Table 9-3 Continued Namespace DLL Description Oracle.DataAccess Client Oracle.DataAccess Client.dll The Oracle data provider for NET (ODP.NET) is a database provider...

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Module 9: The Transactional Data Access Layer

Danh mục: Chứng chỉ quốc tế

... 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 Access ... modules that focus on the data access layer (DAL) In Module 8, “The Nontransactional Data Access Layer,” you learned about data retrieval In this module, you will learn about data manipulation After ... DAL: Module 8, “The Nontransactional Data Access Layer” and Module 9, “The Transactional Data Access Layer.” The DAL is an application’s means of access to data services After completing this...

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Tài liệu java Data Access JDBC, JNDI, and JAXP pptx

Danh mục: Kỹ thuật lập trình

... ResultSetMetaData objects 135 Using ResultSetMetaData objects 135 ResultSetMetaData example 136 The DatabaseMetaData Interface 140 Creating DatabaseMetaData ... Getting Started with Java Data Access Chapter List Chapter 1: Introducing Java Data Access Development Chapter 2: A Relational Database Primer Chapter 1: Introducing Java Data Access Development In ... protect against data loss or corruption Relational databases are the most Chapter 1: Introducing Java Data Access Development widely used database system • Hierarchical database — Stores data in records...

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Tài liệu Bài 6: Data Access and Viewingwith .NET docx

Danh mục: Kỹ thuật lập trình

... System .Data – Để truy cập xử lý CSDL, sử dụng namespace System .Data, System .Data. Common, System .Data. OleDb, System .Data. SqlClient, System .Data. SqlTypes – Các lớp System .Data: DataSet, DataTable, DataRow, ... data adapter – Tạo data set – Sử dụng phương thức Fill() data adapter Xây dựng cách thêm data table – Tạo DataSet – Tạo DataTable Khởi tạo data table cách thêm DataColumn Thêm dòng liệu vào data ... Add data table vào data set cách thêm vào thuộc tính Tables data set Data Access and Viewing with NET Editor: Đoàn Quang Minh Đoà 10 Working with DataSet – Example DataSet ds = new DataSet(); DataTable...

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Tài liệu Java Data Access—JDBC, JNDI, and JAXP ppt

Danh mục: Kỹ thuật lập trình

... ResultSetMetaData objects 135 Using ResultSetMetaData objects 135 ResultSetMetaData example 136 The DatabaseMetaData Interface 140 Creating DatabaseMetaData ... Getting Started with Java Data Access Chapter List Chapter 1: Introducing Java Data Access Development Chapter 2: A Relational Database Primer Chapter 1: Introducing Java Data Access Development In ... protect against data loss or corruption Relational databases are the most Chapter 1: Introducing Java Data Access Development widely used database system • Hierarchical database — Stores data in records...

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Tài liệu Activity 9.4: Identifying Data Access Requirements ppt

Danh mục: Tin học văn phòng

... 74 Activity 9.4: Identifying Data Access Requirements Exercise 1: Identifying a Data Access Method for a Scenario (10 minutes) ! Identify data access requirements Participate in small ... Scenarios A All data for a new order entry system is going to be stored in Microsoft® SQL Server™ and accessed by Microsoft Excel for querying and by the Web system for additional lookups All data is ... to be generated and copies to be stored in a repository for easy access in the future Solution A B Activity 9.4: Identifying Data Access Requirements 75 Exercise 2: Analyzing Technology Selection...

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Tài liệu Module 8: The Nontransactional Data Access Layer doc

Danh mục: Hệ điều hành

... Business Logic Layer Data Access Layer Transactional DAL Data Services Nontransactional DAL The data services store and manage all of the data used by the system Access to the data services requires ... layer (DAL): Module 8, “The Nontransactional Data Access Layer” and Module 9, “The Transactional Data Access Layer.” The DAL is an application's access to data services After completing this module, ... DAL: Module 8, “The Nontransactional Data Access Layer” and Module 9, “The Transactional Data Access Layer.” The DAL is an application’s means of access to data services After completing this...

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Tài liệu Module 7: Universal Data Access with ADO 2.5 docx

Danh mục: Quản trị mạng

... connect to a data source, retrieve selected data, and manipulate data ! Retrieving Data from a Database Explain that in an enterprise solution, it is critical that developers access databases efficiently ... 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 using ... Commands Efficiently ! Accessing Web Data ! Lab 7.2: Accessing Data from a Web Site ! Best Practices ! In this module, you will learn how to use ADO 2.5 for Universal Data Access You will learn...

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Tài liệu Activity 8.1: Selecting Data Access Technologies pdf

Danh mục: Cơ sở dữ liệu

... Exercise 1: Identifying Data Access Considerations In this exercise, you will identify and group the factors to be considered for accessing data in a set of scenarios ! Identify data access considerations ... Identify the data stores and list them in the first column of the following table For each data store, list the data access considerations that have the greatest effect in determining a data access ... appropriate data access technologies for the scenario outlined in this activity, taking into account both the scenario details and the data access considerations previously defined ! Identify data access...

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Tài liệu Module 9: The Transactional Data Access Layer pptx

Danh mục: Hệ điều hành

... 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 Access ... modules that focus on the data access layer (DAL) In Module 8, “The Nontransactional Data Access Layer,” you learned about data retrieval In this module, you will learn about data manipulation After ... DAL: Module 8, “The Nontransactional Data Access Layer” and Module 9, “The Transactional Data Access Layer.” The DAL is an application’s means of access to data services After completing this...

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Tài liệu Hưỡng dẫn tạo Wireless Ad hoc / Access Point trong Windows 8 pot

Danh mục: Cơ sở dữ liệu

... tính Ad hoc / Access Point Windows phiên trước,do vài yếu tố bảo mật Tuy nhiên, tính không hoàn toàn tích mà ẩn sâu cấu trúc Windows Bài viết hướng dẫn bạn cách tạo Wireless Ad hoc / Access Point ... mục thông qua mạng LAN Bằng cách đó, đặc biệt tính adhoc tích Windows 1.Cách thiết lập Wireless Ad hoc / Access Point windows Trước hết bạn mở command prompt chế độ admin Để làm việc mở tìm kiếm ... góc trái Tìm kiếm cmd nhấp chuột phải vào Chọn run as administrator từ bên Ở bắt đầu tạo wireless ad hoc / access point windows Gõ vào dòng lệnh ”netsh wlan show driver” Bạn phải tìm kiếm xem card...

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NET Data Access Architecture Guide potx

Danh mục: Kỹ thuật lập trình

... OleDbDataAdapter OracleDataAdapter SqlDataAdapter ODBCDataAdapter OleDbDataReader OracleDataReader SqlDataReader ODBCDataReader OLE DB NET Data Provider Oracle NET Data Provider SQL Server NET Data ... Flexible Data Binding DataSet Batch Update SqlDataAdapter Data Access Component Disconnected Retrieval and Presentation Scenario WebForm SqlDataReader Data Access Component Figure 1.4 Multiple row data ... page shows the full DataSet object model 4 Microsoft DataSet DataRelationCollection ExtendedProperties DataTableCollection DataTable DataRowCollection DataView DataRow ChildRelations...

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Just Spring Data Access ppt

Danh mục: Kỹ thuật lập trình

... information to construct a DataSource if you are using any other databases The datasource-beans.xml file shown below creates a DataSource for MySQL database:

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Spring Data Modern Data Access for Enterprise Java pdf

Danh mục: Cơ sở dữ liệu

... Overview of the New Data Access Landscape The data access landscape over the past seven or so years has changed dramatically Relational databases, the heart of storing and processing data in the enterprise ... alternative data stores that are being used in mission-critical enterprise applications These new data stores have been designed specifically to solve data access problems that relational database ... benefits each NoSQL data store offers A graph database should be chosen to store highly interconnected data A document database should be used for tree and aggregate-like data structures A key/value...

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Báo cáo hóa học: " Research Article Optimal Channel Selection for Spectrum-Agile Low-Power Wireless Packet Switched Networks in Unlicensed Band" doc

Danh mục: Hóa học - Dầu khí

... Thus, if a packet contains B bits and it is transmitted with data rate of R bps, the normalized packet size L is given by L= B Rσ (1) Since we assumed the interfering nodes belong to a packet- switched ... other coexisting networks We assume all networks are packet switched where data transmission is performed by transmitting variable-sized packets The goal is then to allow spectrum-agile nodes ... of a packet switched network—using a packet sniﬀer [6] In the measurement setup, we monitor two channels for ﬁve minutes and record the transmission and reception times of all exchanged packets...

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