access sample database northwind

Method 1: SqlConnectionconnnewSqlConnection (); 2conn. connectionString quot; Server127.0.0.1; UserIDsa; Passwordfdahgdrethj31313210212121; Databasenorthwind; PersistSecurityInfoTrue quot; 3conn. open (); 4 SqlData first example method: 1 SqlConnection conn = new SqlConnection (); 2 conn. connectionString = "Server = 127.0.0.1; User ID = sa; Password = fdahgdrethj31313210212121; Database = northwind; Pe

encapsulate frequently used JDBC database connections into a class that can be invoked directly when used. disadvantages such as the following: The speed of access to data records has been affected to a certain extent; Changing the data source is difficult: JDBC supports multiple databases, and the operations between the various databases are different, which can cause a lot of trouble fo

encapsulate frequently used JDBC database connections into a class that can be invoked directly when used. disadvantages such as the following: The speed of access to data records has been affected to a certain extent; Changing the data source is difficult: JDBC supports multiple databases, and the operations between the various databases are different, which can cause a lot of trouble fo

encapsulate frequently used JDBC database connections into a class that can be invoked directly when used. disadvantages such as the following: The speed of access to data records has been affected to a certain extent; Changing the data source is difficult: JDBC supports multiple databases, and the operations between the various databases are different, which can cause a lot of trouble fo

encapsulate frequently used JDBC database connections into a class that can be invoked directly when used. disadvantages such as the following: The speed of access to data records has been affected to a certain extent; Changing the data source is difficult: JDBC supports multiple databases, and the operations between the various databases are different, which can cause a lot of trouble fo

function with ODBC; Object-oriented: the ability to encapsulate frequently used JDBC database connections into a class that can be invoked directly when used. disadvantages such as the following: The speed of access to data records has been affected to a certain extent; Changing the data source is difficult: JDBC supports multiple databases, and the operations between the various data

, age, Sex,address, Depart, Worklen,wage) "+" VALUES (' Tom1 ', 321, ' M ', ' C Hina ', ' personnel ', ' 3 ', ' 3000 '); If PreparedStatement is used, then: Prest.setint (1,1980); Indicates that the 1th parameter is 1980 prest.setint (2,2004); ResultSet rs = Prest.executequery (); Querying the data by calling the ExecuteQuery () method of the Statement object, and the query result gets the ResultSet object, resultset represents the collection of data returned after the query

This section describes a sample database that may be used in all parts of this book. This database gives you a reference example when learning to put MySQL into work. We mainly give examples from the two scenarios described above:Secretariat programme for the Agency. We need something more specific than the "agency," so now we're going to construct one that has t

Install the sample database when installing the DB2 database (DB2 v 9.7 is used here). Only system has the permission for the installed sample database. The default mode is system, users using the Administrator and db2admin cannot access