tags:

views:

22

answers:

1
Q: 

How to handle 2 different versions(free, pro) database requirement

Hi

I am planning to write an application which will be available in 2 versions. one free and the other one paid.

The only difference is that in free versions only a maximum of 2 DB entries are allowed. but its unlimited in paid version.

DB does not have more than 1 table with 5/6 fields.

I am planning to use xml for free version and SQLite for paid version. Is this ok? are there any other options?

+1  A: 

Why not just use SQLite for both versions? It seems lot a lot of unnecessary work to support both data stores.

Joel Coehoorn  2009-08-10 15:48:42
OK thanks!! What do you think is the best method to restrict the entries for the free version?
 2009-08-10 15:50:52
There are lots of ways to do it, but just add a check that there aren't more than 2 records before inserting new ones, or if you want to allow replacement just put a TOP 2/LIMIT 2 in the query text.
Joel Coehoorn  2009-08-10 16:07:06

related questions

What are the most important functional differences between C# and VB.NET?
Setting Group Type for new Active Directory Entry in VB.NET
ASP.Net Datagrid: in Footer calculate Avg or Sum for column
Opening a file in my application from File Explorer
HTML Email Editor in a Windows Forms Application
Datatables, Dataviews and distincts! (ASP.Net/VB)
Naming convention for VB.NET private fields
Visual Studio - new "default" property values for inherited controls
Change the width of a scrollbar
Is String.Format as efficient as StringBuilder
Default Form Button in FireFox
VB.NET - IsNothing versus Is Nothing
'Break' equivalent keyword for VB
What is the best way to wrap time around the work day?
Best SVN Client Ignore Pattern for VB.NET Solutions?
Long-time LAMP Developer moving to VB.NET
What's the best way to find long-running code in a Windows Forms Application
What is the best way to deploy a VB.NET application?
'Best' Diff Algorithm
Setting Objects to Null/Nothing after use in .NET
CSV File Imports in .Net
How do you migrate a large app from VB6 to VB .net ?
Floating Point Number parsing: Is there a Catch All algorithm?
Decoding T-SQL CAST in C#/VB.net
Reliable Timer in a Console Application