connect to a sql server 2008 database in java with jdbc

... ADO.NET automatically stores database connections in a pool. Connection pooling offers a great performance improvement because you don't have to wait for a brand new connection to the database ... create a SqlConnection object to connect to the // database, passing the connection string to the constructor SqlConnection mySqlConnection = Using a SqlConnection Object to Connect to a SQL ... MySqlConnection.cs illustrates how to use a SqlConnection object to connect to a SQL Server database */ using System; using System.Data; using System.Data.SqlClient; class MySqlConnection...

Ngày tải lên: 07/11/2013, 10:15

... object SqlConnection mySqlConnection = new SqlConnection(" ;server= localhost ;database= Northwind;uid=sa;pwd=sa"); // monitor the StateChange event using the StateChangeHandler() ... your connection request to the database; two examples of states are open and closed. You use the Connection object's State property to get the current state of the connection to the database. ... has changed from Closed to Open Calling mySqlConnection.Close() mySqlConnection State has changed from Open to Closed The InfoMessage Event The InfoMessage event fires when the database returns...

Ngày tải lên: 14/12/2013, 13:15

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Ngày tải lên: 10/04/2014, 12:11

... from changing data being read by a user and preventing users from reading data being changed by a user. Locks are acquired and released by user actions; they are managed internally by database ... command. SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); SqlCommandBuilder cb = new SqlCommandBuilder(da); ... dataGrid.DataSource = null; [ Team LiB ] Recipe 6.14 Specifying Locking Hints in a SQL Server Database Problem You need to pessimistically lock rows in an underlying SQL Server database. ...

Ngày tải lên: 17/10/2013, 20:15

... conn.BeginTransaction(IsolationLevel.ReadCommitted); // Create the command. SqlCommand cmd = new SqlCommand(sqlText, conn, tran); // Create the DataAdapter and CommandBuilder. SqlDataAdapter da = new SqlDataAdapter(cmd); ... on a resource. Locks ensure transactional integrity and database consistency by preventing other users from changing data being read by a user and preventing users from reading data being changed ... database locks, using locking hints, or monitoring database locks, see Microsoft SQL Server Books Online. [ Team LiB ] SERIALIZABLE Use the same locking as a transaction with an isolation...

Ngày tải lên: 14/12/2013, 18:16

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Ngày tải lên: 31/03/2014, 16:20

... thường đó là Default Instance. Một Instance c a SQL Server 2000 có 4 system databases và một hay nhiều user database. Các system databases bao gồm: • Master : Ch a tất cả những thông tin cấp hệ thống ... SQL Server hay khi ta disconnect. • Model : Database này đóng vai trò như một bảng kẻm (template) cho các database khác. Ngh a là khi một user database được tạo ra thì SQL Server sẽ copy to n ... Thiết Kế Một Database Tạo Một User Database Chúng ta có thể tạo một database dễ dàng dùng SQL Server Enterprise bằng cách right-click lên trên " ;database& quot; và chọn "New Database& quot;...

Ngày tải lên: 25/08/2012, 09:00

... (template) cho các database khác. Ngh a là khi một user database được tạo ra thì SQL Server sẽ copy to n bộ các system objects (tables, stored procedures ) từ Model database sang database mới v a ... (SQL) Server nào đó là ta nói đến một Instance c a SQL Server 2000, thông thường đó là Default Instance. Một Instance c a SQL Server 2000 có 4 system databases và một hay nhiều user database. ... primary data file và transaction log file. Ví dụ: USE master GO CREATE DATABASE Products ON ( NAME = prods_dat, FILENAME = 'c:\program files\microsoft SQL server\ mssql\data\prods.mdf', ...

Ngày tải lên: 06/10/2013, 17:20

... Mode authentication you are asked to provide a password for the system administrator (sa) account. This account is available so you can authenticate as a “sysadmin” via SQL Server Authentication. ... that allow you to manage a remote SQL Server Server and Client Tools – Installs an instance of SQL server and the Client Tools Connectivity Only – Installs the Data Access Components (DAC) and ... like to install SQL Server we have to choose what we would like to do in this installation. Create a new instance – Allows you to install a new instance of SQL Server or the Client Tools Upgrade,...

Ngày tải lên: 17/10/2013, 09:15

... desktop database, capable of meeting the data storage and handling needs of a small department. The concept of a database that was integrated with Windows and had an easy -to- use interface ... This means that the syntax for retrieving data, and so on, is the same from one database to another. However, each database has its own special syntax to maintain it, and trying to use a feature ... . . 71 Creating a Database in SQL Server Management Studio . . . . . . . . . 71 Dropping the Database in SQL Server Management Studio . . . . . . 84 Creating a Database in a Query Pane . . ....

Ngày tải lên: 18/10/2013, 07:15

... MVP Companion eBook Available THE APRESS ROADMAP Accelerated SQL Server 2008 Beginning SQL Server 2008 for Developers Beginning SQL Queries Beginning Database Design Pro SQL Server 2008 Relational Database ... we use the names only in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of the trademark. Java and all Java- based marks are trademarks or registered ... working with relational databases—including nearly every version of SQL Server. My first goal in writing this book is to explain many of the important concepts you need to learn from a database...

Ngày tải lên: 29/10/2013, 15:15

... Database Design and Optimization (Apress, 2006), and Database Benchmarking: Practical Methods for Oracle & SQL Server (Rampant, 2007). Kevin contributes to SQL Server Magazine and Database ... specializing in data modeling, data quality, and information management. His past and current clients include the State of Idaho; Albertsons; American Honda Motors; and Toyota Motor Sales, USA. ... code. Chapter 12: Database Interoperability: Finally, in this chapter written by Kevin Kline, the chal- lenges of building databases that have to run on not only SQL Server but also other database server...

Ngày tải lên: 29/10/2013, 15:15

... necessary. It does not limit you to accessing data within only that one database; however, managing data in separate databases becomes a mor e manual process, rather than a natural, built -in RDBMS ... the database server can be addressed by knowing the database they reside in and the schema (note that you can set up linked servers and include a server name as well): databaseName.schemaName.objectName Schemas ... database description is represented at the logical level in the same way as ordinary data, so that authorized users can apply the same relational language to its interrogation as they apply to...

Ngày tải lên: 08/11/2013, 21:15

... use a surrogate key. In reality, many of our exam- ples of natur al keys w ere actually surrogate keys in their original database but were elevated to a natural status by usage in the “real” ... have the same name. Some change their names from Archibald Leach to some- thing more pleasant like Cary Grant, but in some cases the person wants to keep his or her name, so in the actors database ... becomes a large validation problem to make sure that different values of the smart key are actually valid. ■ Note Smart keys are useful tools to communicate a lot of information to the user in a small...

Ngày tải lên: 08/11/2013, 21:15