How to check whether the table existis in Database using JDBC?
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stmt = connection.createStatement();\n\n// check from User_tables data dictionary table \n//to see if the table exists.\nrset = stmt.executeQuery(" SELECT Table_Name FROM\n                           User_Tables "+ \n                         " WHERE Table_Name='XYZ'");    \n\n// if the resultset of the above query \n//does not have any record, \n//it means table is not existing.\nif (!rset.next())\n{\n          //operation to do if table doesn't exist\n}\nelse\n{\n          //operation to do if table exists\n}
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JDBC Example\nThis is a simple code that shows how to use JDBC. It shows how to select data from the northwind database running on localhost to which we connect using USERNAME/PASSWORD login. This is the basic database operation. INSERT/UPDATE/DELETE are even simpler since they don't require looping through the result set. \n\n\nimport java.sql.*;\n\npublic class JDBCDemo {\n\n    public static void main( String[] args ) {\n        try {\n            // Connect to the database\n            Class.forName("org.gjt.mm.mysql.Driver");\n            String url = "jdbc:mysql://localhost/northwind";\n            Connection con = DriverManager.getConnection(url, "USERNAME", "PASSWORD");\n\n            // Execute the SQL statement\n            Statement stmt = con.createStatement();\n            ResultSet resultSet = stmt.executeQuery("SELECT * from customers");\n\n            System.out.println("Got results!");\n\n            // Loop thru all the rows\n            while( resultSet.next() ) {\n                String data = resultSet.getString( "CompanyName" );\n                System.out.println( data );\n            }\n\n            stmt.close();\n        }\n        catch( Exception e ) {\n            System.out.println(e.getMessage());\n            e.printStackTrace();\n        }\n    }\n}
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Sorry....\n\nYou cannot load JAVA classes into a Database..\n\nI think you meant how to put stuff within an oracle DB within java?\n\nJust use the Oracle connector.. look at the website for oracle 8i and use the java jdbc connector (odbc)_
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You will need to load the XML file into a DOM. The DOMDocument object is part of the MSXML DLL and allows you interact with an XML document.\n\nOnce loaded you can use an XPath expression to determine if what you are looking for exists in your XML document.\n\nHere is the XPath syntax\nhttp://www.w3schools.com/xpath/xpath_syntax.asp\n\nAt the bottom of this page you can see an example of it.\nhttp://www.perfectxml.com/msxmlDOM.asp\n\n - Create the DOM\n - Load the document NB it must be well formed xml otherwise it will error, you may have to trap the error otherwise it continues with unexpected results\n - Try to "selectsinglenode" using your XPath expression (XPath is to XML what T-SQL is to SQL Server databases)\n - If the node exists you will have a node object you can interrogate, otherwise you have 'nothing'
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CREATE DATABASE [Database Name];\n\nWithout knowing the scope of your question, that is all there is to it.
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using the JDBC api to attain this in the jsp.Using this api u can connect to the database and get the information from the data base and can display in the same jsp.The only thing that needs to be done with refreshing the entire page just refresh the frame in which the information needs to be displayed.Or if you want to go fro a very high level design use the Dcache object this mainly caches the information for the database as a result of this you can retrive the information form the decache object itself with out going to the database.
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Capture and test the return value from mysql_connect(). If it's not FALSE, it contains your DB resource. If it FALSE, do some other processing. e.g.\n\nif( mysql_connect( whatever ) )\n{\n  do something;\n}\nelse\n{\n  do something else;\n}\n\n// or more commonly:\n\nif( ! mysql_connect( whatever ) )\n{\n  do error processing;\n}\nelse\n{\n  do normal processing;\n}\n\nNote that you should disable error displays on production servers in your php.ini file. (Errors will still appear in you apache error log.) e.g.\n#php.ini\n...\ndisplay_errors = Off\n\nAlternatively, you can use this function from your code:\n\nerror_reporting(0);
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heres some code from a old ASP.NET application I found (the database connection string should be 1 line)\n\nDim Public DBS as String = "PROVIDER=Microsoft.Jet.OLEDB.\n4.0; DATA Source=c:&#92;DataBase.mdb"\n\n\n\nDim myconnection as oleDbConnection = new oleDbconnection(DBS)\nmyConnection.open()\nDim myCommand as oleDbCommand = New OleDbCommand("Select * from Threads", myConnection)\nDim myDataReader as oleDbDataReader = myCommand.ExecuteReader()
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Hi,\n\noracle.jdbc.driver.OracleDriver is inside Class12.jar, u r application not able to find out Draver.class  , make sure class12.jar is in classpath
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I think u have to enter you host name, username password and the name of the database after the =>.\n\nyou can do this wich a text editor like notepad.
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This is one of many ways to do it. This is the most straight forward and assumes you know sql syntax & that you know your connection string:\n\nDim cn as New System.Data.SqlClient.SqlConnection()\nDim cmd as New System.Data.SqlCommand()\n\nTry\n     'set your sql connection string here\n     cn.ConnectionString = ""\n     cn.Open()\n     cmd.CommandText = "delete from [MyTable] where [MyRowID] = 123"\n     cmd.ExecuteNonQuery()     \nFinally\n     If cn <> Nothing AndAlso cn.ConnectionState = System.Data.ConnectionState.Opened Then\n        cn.Close()\n        cn.Dispose()\n     End If\nEnd
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I am assuming that the code - \nstrSQL = "SELECT * FROM tbl_Hardware WHERE Hardware_ID = 2" \n\nis in a <script language=vbscript> block....\n\nIf I am correct, then that part of the code will be available on the client side, whereas the code that you have in the <%%> block is a sever side code available on the server side.\n\nIf the value of strSql does not change on the client side then one way of doing this is\n\n<%\ndim sql\nsql = "SELECT * FROM tbl_Hardware WHERE Hardware_ID = 2" \n%>\n<script language=vbscript>\nstrSQL = <%=sql%>\n </script>\n<%\nSet rs = cnnLogin.Execute(sql)\n%>\n\nIf the Value of the strSQL changes on the client side, then you need to pass it back to the server on submit using some sort of hidden fields.\n\n-jainnys\nMind Experts Inc\nhttp://www.mindexp.com
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Taht looks good, but I'd try this instead.\n\n&#92;&#92;code start\nDataColumn[] keys=new DataColumn[1];\ndataSet11.Tables["Orders"].Con... UniqueConstraint("ck_constrain...\nkeys[0]=dataSet11.Tables["Orde...\ndataSet11.Tables["Orders"].Pri...\nDataRow findrow = dataSet11.Tables"Orders"].Rows...\n&#92;&#92;code end
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I'll give you an idea of the first one so you can learn how to do this yourself.\n\n1. Find the names who directly supervised by Franklin Wong\nselect * from SomeTable where SupervisedBy='Franklin Wong'\n\nThe rest are no different they are all select statements.\nutilising <, >, =, or, and to develope the sql query
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JDBC (Java database connectivity) is an API for database access from within a Java program. You can use JDBC to access any database that supports the API by providing a JDBC driver. \nJDBC is similar to ODBC in the sense that it is database independent. \nThere are two most commonly used versions of JDBC API. The JDBC 1.2 API and the more recently released JDBC 2.0 API. There are some distinct advantages of using JDBC 2.0. We will cover that a little later. First let's see how to write a simple program using the common features of JDBC APIs .To use the JDBC API to access any database you need a JDBC driver. These drivers are either written purely in Java, or use the Java Native Interface. Here is the list of different drivers available. ->> http://developers.sun.com/product/jdbc/drivers\n Tutorials\nhttp://javaboutique.internet.com/tutorials/Building_WebApps/index2.html\nhttp://dev.mysql.com/doc/refman/5.0/en/cj-general-j2ee-concepts.html\nhttp://javaboutique.internet.com/tutorials/Building_WebApps/index2.html
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Are you connecting it via MySQL Connector/J or not? If No then connect to Mysql with the Connector/J and make sure your database is up and running!
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I think for that u need the machine name or the IP address of the database machine.\n\nU can use this machine name or IP as the data source value in ur connection-string value provided for connection in ur code..