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  3. March 2003

Re: Questions from the other world

If these are all MS concepts, i recommend going to <msdn.microsoft.com> - this is the MS Developer's Network website, and I found a number of these concepts discussed there. As far as I can tell, datasets are like result sets in embedded SQL. DataTable is a VB object by which you can manipulate a data source (SQL, ODBC, etc.).

Instantiation is an object-oriented concept, you create an instance of a class, which is a description of a set of data, and functions that can be done to and with that data (variables). A 400 equivalent is class = object type (like *FILE). All files on the 400 have common characteristics and common functions that apply to them (DLTF works for all file types, e.g.). Then there are specific things that apply to the various filetypes. CPYSPLF applies only to spooled files, SNDRCVF applies only to display files. Every file is an instance of the general class of objects called *FILE. This is why folks say the400 is object-based.

A DSPF can even be understood as a kind of class, which is instantiated for each user as they start an application. The actual values of data on the screen, or more esp., in a subfile, will vary from time to time, but the structure of the file is the same, and the operations allowed are the same.

HTH

Vern

At 11:13 AM 3/2/2003 -0800, you wrote:

Can anyone explain some of these concepts from VB/.net/C++ etc...
Are any of these explainable in AS/400 terms?
1. push-pull method
2. Instantiated directly
3. another instance of the report (do they mean diff version number?)
4. have a dataset generated from a stored proc and programmatically set it at run time).
5. Convert dataset to datatable.
>From a green screen diehard,
Rob



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