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<snip> Crystal reports "has that built in"? That's amazing. I can open it up and tell it I want OpenOrders and it automatically joins ECL, ECH, IIM, etc, and, calculates onHand as IOPB+IADJ+IRCT-IISS? Without any setup by a developer or anything? How does it know? </snip> Actually, it pretty well can know except people don't use the AS/400 as a database system. If your database is created using normalized tables and you use referential integrity, the relationship are known so Crystal or any tools can suggest or show you what the relationships are. But, of course, how many people use the AS/400 as a database? Just slap together a file and in most case, never even put on a unique index and even if you want to put on referential integrity you cannot. This is how one of our programmers put a table together the other day. Document number - Not Unique Key. PONumber ASNNumber EdiLine So if you have 30 lines of EDI data, you repeat all the PONumber and ASNNumber fields over and over in the database(There were a lot more) over and over. Could not understand why this was a problem and I almost got fired because my boss thought worrying about this stuff was unimportant. I finally got a set of normalized tables created but the other programmer is still pissed because I was wasting his time. Now in fairness to the AS/400, I must say that I see this in SQL Server databases too. Tables created but no referential integrity. If the database is created correctly, almost any GUI tool is going to know what do. What I was saying about Crystal Enterprise is that you can go in and create pre-defined views and store them in Crystal but this is still no substitute for having referential integrity.
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