Advise on using access methods

Hi
I have defined a class which looks like this
public class Order {
private int ordernumber;
private OrderLines lines;
I have a requirement to display all the orders including the details for a customer,
Should I write a program which gets all the orders and then loop thru the orders and get the order details or write one sql which gets me all the data at once and populate the classes from there
Please advise
Thanks

No, I think you're actually following a J2EE pattern. I believe the correct name is "Session Facade". The idea is to give clients coarse-grained access to data.
It's well known that the "one entity EJB per database row" analogy breaks down because it requires too many network roundtrips to fetch a collection of objects, so it's considered a best practice to fetch related objects at once.
You'll get better info at this site than from me:
http://www.corej2eepatterns.com
But I think DrClap has summarized the idea in a previous note. - MOD

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    Hello,
    There are two main methods for working with MS-Access databases in Visual Studio with VB.NET. One method you go through several steps which the IDE data wizard creates strong typed classes and assist with binding fields in the database table to controls
    such as a DataGridView, ListBox, TextBoxes etc. The second method you actually write all the code which can go in two different directions.
    Which one to pick is dependent on your expertise in general with VB.NET. Both have advantages and disadvantages.
    The following shows the beginnings of working with data wizards in the IDE while
    this page is an index for the link just provided with a mixture of examples.
    If open to suggestion and dependent on your needs please consider looking at using SQL-Server since there is an Express version of SQL-Server installed with Visual Studio. SQL-Server is overall and better choice but does not mean it's best for you at this
    time but worth considering.
    Please remember to mark the replies as answers if they help and unmark them if they provide no help, this will help others who are looking for solutions to the same or similar problem. Contact via my webpage under my profile
    but do not reply to forum questions.

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