tool to generate class from database table c#

An enum class has been added to the JDK1.5 that can be used to map to database tables. And it's very convenient to implement. Here's an example: Development environment: JDK 1.6 U2 Eclipse 3.3 There is a table in the database: Useruser It has two fields: 1, id;2, username, We map out an enum: public enum UserUs

Tags: rails refactoring instantly compare records in tablesWhy do you have it? Don't worry, people with obsessive-compulsive disorder can't afford to hurt themselves! It's a little bit of a trifle. Feel itchy: is if the table payment_types often change what to do? Do you want to shut down the Rails Web server and restart it every time? That's too much trouble Bird, the final solution is that In order validation, it is mandatory to pull the payment typ

Label: --View current Server database SELECTDatname fromPg_database--view the created user table SELECT * fromPg_stat_user_tables--Create a database CREATE DATABASE"Fxsz_lt" withOWNER=Postgres ENCODING='UTF8'tablespace=Pg_default--lc_collate= ' Chinese (Simplified) _people ' s Republic of china.936 ' --lc_ctype= ' Chi

, we can see that the constructor implements the initialization and assignment processes of objects:Object initialization is completed through the initialization list, while object assignment is through the constructor, or more accurately, it should be the implementation body of the constructor. Virtual function table pointer (vtable pointer)How can we ignore the virtual function table pointer? Without it,

virtual function address. C + + compiler should be to ensure that pointers to virtual function tables exist in the first place in the object instance (this is to ensure the highest performance of the virtual function table if there are multiple layers of inheritance or multiple inheritance). This means that we get this virtual function table from the addre

Tags: method implementation Select row data list ADO sel dictionary start1. Purpose Use the ADO to connect SQL Server database, delete and change the data table. 2. Requirements Pass in SQL statements and parameters to get a result set or dictionary set 3. Approach to implementation Encapsulates the parameterized method and the SqlDataReader value method of the ADO object, adds the passed-in parameter to th

(null,?,?, null);";Try{PreparedStatement PS=con.preparestatement (Sql,statement.return_generated_keys);//A parameter that indicates the need to return the primary key ps.setstring (1, "Mike"); Ps.setstring (2, "4399"); Ps.execute (); ResultSet Re=Ps.getgeneratedkeys (); Returns the primary key Re.next (); intN=re.getint (1); System.out.println ("The natural growth of the serial number is" +N); Output primary key simplecon.close (re); Simplecon.close (PS);simplecon.close (co