sorry for the short answer, but I was kind of sleepy. A couple a months ago I was working in a project something like: a group have several salesman that has several sales in the interface one selects a group and a list od salesman shows up, then one could select a salesman and it will be shown some statistical analysis profile on this guy, or it could search for a specific profile and the best match salesman get selected. In my first draft design if a salesman get selected then I query for his personal data, and all his sales and perform the analysis, on the other hand if a profile is send I load all sales and perform analisys, query for the most probables salesmans on the group and perform new analysis. The problem is that the DB server was remote and centralized so queries generate network trafic, disconnections, waits, angry users and so on. Then I redesigned the system to query for all salesman and sales in the group (inside a group there are a resonable low number of then) and perform the mix and matching in memory which was boring, repetitive and error prone, and mostly easy to acomplish with good relational algebra operations. The real thing was a litle more complicated than that, but in a nutshell that´s it Hope my history is of any help in rtl development, basicaly I would love to be able to perform relational operations togheter with other C++ operations. Also, I hope/wish to see Boost.RTL/Rel ;) around soon; On Sat, 12 Feb 2005 05:13:43 -0200, Sérgio Vale e Pace <svpace.forum@gmail.com> wrote:
right now it's just a general interest, but being able to solve relational algebra equations using in memory sets of data already came up as an issue in past projects. primarily when trying to avoid round trip queries to the database
On Fri, 11 Feb 2005 10:22:08 -0500, Arkadiy Vertleyb <vertleyb@hotmail.com> wrote:
"Sérgio Vale e Pace" <svpace.forum@gmail.com> wrote
well, if it counts for anything I would be very intersted in such library
Of course it counts, and it is very much appreciated.
Do you have any particular problem you want to apply it to, or is it just a general interest?
Regards,
Arkadiy
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