default constructor

Create an instance of McoSqlEngine.

For an overview see page McoSqlEngine

The McoSqlEngine default constructor takes no arguments and is invoked implicitly when an engine object is declared. Typically a C++ application will instantiate an McoSqlEngine object in the main program as illustrated below:

Note that, as memory allocation in eXtremeSQL is done internally through a static memory block allocator, instantiating the McoSqlEngine instance in global static memory should be avoided. For example, instead of the following:

 
    // DO NOT instantiate the engine like this
            
    McoSqlEngine engine;
            
 
    int main(int argc, char** argv)
    {
        ...
    }
     

which instantiates engine in global static memory, it should be instantiated in main() as follows:

 
    int main(int argc, char** argv)
    {
        McoSqlEngine engine;
            
        ...
    }
     

eXtremeSQL C++ applications typically use an McoSqlEngine instance to execute simple SQL statements and queries. (Please view the Embedded SQL Quick Start page for an example.)

However, functionality for managing transactions and executing prepared statements, i.e. SQL statements that are created once and executed multiple times, is provided in the McoSqlSession class.