[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [Elist Home]
Subject: re: Query related comments (was RIM v0.54 distribution)
Message text written by Farrukh Najmi >BTW I have had significant discussions with several query language experts (people who have contributed to existing query language standards) and their general opinion is that designing a home brewed query interface syntax is a very difficult task to get right. They unanimously favor a constrained subset of an existing standard. These experts include Rick Cattell (OQL), Umit Yalcinap (EJB-QL), Neelam Vaidya (XML Query) and Eve Maler (XPointer). <FullDisclosure>They are all Sun employees</FullDisclosure>. Lastly, I want to propose a requirement that any query interface we come up with must be able to do combinatorial queries using all attributes defined by RIM. Note that this is a much simpler requirement than designing a general purpose ad hoc query mechanism where there is no pre-defined information model or schema.< >>>>>>>>>>>>>>>>>>> Farrukh, The proposal I documented today appears to meet both these criteria completely. Since it is only a XML container for business functional procedures and focused subset queries based on a constrained subset of XPath/XPointer, and PLUS it is exactly tied to exploiting and providing combination queries that exactly reflect the RIM access paths. Most especially because it completely avoids at the procedure level of dictating ANY query language whatsoever - just the business functional API behaviour at a high level. I can work tomorrow on producing a quick two or three page proposal to formally qualify this beyond the details in the emails as indicated by Scott previously prior to Friday. The email does however appear to suscintly capture the salient details. Thanks, DW.
[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [Elist Home]
Powered by eList eXpress LLC