Developing embedded SQL applications

When developing embedded SQL applications, you mix SQL statements with standard C or C++ source code. In order to develop embedded SQL applications you should be familiar with the C or C++ programming language.

The development process for embedded SQL applications is as follows:

  1. Create your UltraLite database.
  2. Write your source code in an embedded SQL source file, which typically has extension .sqc.

    When you need data access in your source code, use the SQL statement you want to execute, prefixed by the EXEC SQL keywords. For example: 

    EXEC SQL SELECT price, prod_name
   INTO :cost, :pname
   FROM ULProduct
   WHERE prod_id= :pid;
if((SQLCODE==SQLE_NOTFOUND)||(SQLCODE<0)) {
  return(-1);
}
  3. Preprocess the .sqc files.

    SQL Anywhere includes a SQL preprocessor (sqlpp), which reads the .sqc files and generates .cpp files. These files hold function calls to the UltraLite runtime library.

  4. Compile your .cpp files.
  5. Link the .cpp files.

    You must link the files with the UltraLite runtime library.

For more information about embedded SQL development, see Building embedded SQL applications.

Copyright © 2008, iAnywhere Solutions, Inc. - SQL Anywhere 11.0.0