On Nov 27, 2:42 pm, 风笑雪 <kea...@gmail.com> wrote: > Actually, I just want to know how to avoid big entity group, is it > possible or not. > It obvious has some other parts need to be figured out, but I'm not > really building a bank system, just concern about it. Main anomaly called arbitrage (no such thing...) while floats and transaction costs testable: stoploss method can reweight markowitz portfolio with cron=you win. Handling currencies requires external verification. One approach was keep a table with exchangerates. Which is no modern way. You can implement an own currency "amount", register app as a computergame, use external certified you trust. Tech we can verify selves, economy more like acceptance or psychology > > 2009/11/27 Niklas Rosencrantz <teknik...@gmail.com>: > > > > > On Fri, Nov 27, 2009 at 10:22 AM, 风笑雪 <kea...@gmail.com> wrote: > >> If so, why google's engineers wast so much time for supporting the > >> useless transaction system? > >> No google guys would like tell me the reason? > > For the future, tech team and investment banking very 2 systems you > > know, one is more legislative (de jure) and technology more de facto. > > Ask a technical physicists "can matter tunnel through..." answer yes. > > Ask investment banker and answer is the opposite (normative) that your > > vault is sealed. > > >> I don't think only using app layer is a good choice, since I need > >> connect the outside db by urlfetch which not efficient and safe > >> enough. > > It's most natural obvious very good choice avoid storage whenever you > > can and just pass on. > > > -- > > > You received this message because you are subscribed to the Google Groups > > "Google App Engine" group. > > To post to this group, send email to google-appeng...@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine+unsubscr...@googlegroups.com. > > For more options, visit this group > > athttp://groups.google.com/group/google-appengine?hl=en.
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