where n is a parameter containing the name of the data set, m is the input mode, and nv is the number of variables. This constructor method will be called when an example of the DDATA class is created ...

When you use a LOCK statement to lock a data object, you can open that data object as often as you want and in any mode that you want (for example, to create, replace, update, or read the object), as ...

This problem gets further heightened when we need to estimate quantities represented as 3D objects, for example, as volumes of spheres. Try this quick exercise out for yourself.