Asked By
jaysonm009
0 points
N/A
Posted on - 09/22/2011
I have a problem about how will I connect my Program or Software to the Database using C++ Programming Language.
Do I have to make a code for connecting my database?
How can I also create a database and what database that could be compatible with C++ Programming?
Answered By
Motin
0 points
N/A
#126114
Connecting database using C++ Programming
C++ programming language is a high level language that you must remember it cannot run from first to an end. Example: #include<stdio.h>char*suits[4]=("Brown,"Yellow","Red","Black")char values.You can use code in C++ programming language.You should write your database into code language of C++ program.Thus install your C++ program software.Could you learn the basic code of C++ program.If you don't know the exact code then how you can be able to make your database into code.C++ programming language is a difficult programming language.Class colours int sidx.vidx.colours.
Connecting database using C++ Programming
Just follow these steps.
-
Include the Header Files
-
Open a Connection to a Database
-
Choose Driver.
-
Query the Database
-
Extract the Data out of the Executed Query
-
Traverse Through the Results
-
Close the Statement and the Connection
//Header files:
#include <sql.h>
#include<sqltypes.h>
#include<sqlext.h>
...
....
//Declaration:
SQLHandle hdlEnv, hdlConn, hdlStmt, hdlDbc
char* stmt = "SELECT * from NutHead"; //SQL statementß NutHead is the Table name
//for example
char *dsnName = “COLLECTOR” ß name of your program or what ever…..
char* userID = "eXceed";
char* passwd = "hole";
char* retVal[256];
unsigned int cbData;
SQLAllocHandle(SQL_HANDLE_ENV, SQL_NULL_HANDLE, &hdlEnv);
SQLSetEnvAttr(hdlEnv,SQL_ATTR_ODBC_VERSION,(void*)SQL_OV_ODBC30);
SQLAllocHandle(SQL_HANDLE_DBC, hdlEnv, &hdlConn);
SQLConnect(hdlConn, (SQLCHAR*)dsnName,SQL_NTS,(SQLCHAR*)userID,SQL_NTS, (SQLCHAR*)passwd, SQL_NTS);
SQLAllocHandle(SQL_HANDLE_STMT, hdlDbc, &hdlStmt);
SQLExecDirect(hdlStmt, (SQLCHAR*)stmt, SQL_NTS);
//Initialize the database connection
while(SQLFetch(hdlStmt) == SQL_SUCCEEDED)
{
SQLGetData(hdlStmt,0,DT_STRING,retVal,256,&cbData);
std::cout << retVal << std::endl;
}
SQLFreeHandle(SQL_HANDLE_STMT, hdlStmt);
SQLFreeHandle(SQL_HANDLE_DBC, hdlConn);
SQLFreeHandle(SQL_HANDLE_ENV, hdlEnv); //End the connection
