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Conference ulysse::rdb_vms_competition

Title:DEC Rdb against the World
Moderator:HERON::GODFRIND
Created:Fri Jun 12 1987
Last Modified:Thu Feb 23 1995
Last Successful Update:Fri Jun 06 1997
Number of topics:1348
Total number of notes:5438

256.0. "KnowledgeBuild on Rdb" by HGOVC::SHIRLEYCHAN () Sat Nov 26 1988 09:25

    My client is evaluating database and 4GL products to run on VAX.
    Among the products are Rdb, Rally; Adabase, Nature; Ultra, Mantis;
    Ingres and Cullinet (IDMS and KnowledgeBuild). They ran some tests on
    the products, Rdb out perform the others.
    
    They like Rdb, KnowledgeBuild but not Rally. I only know KnowledgeBuild
    can run on Rdb and nothing else. Can anyone tell me more about
    KnowledgeBuild, any reference site with KnowledgeBuild on Rdb, and any
    limitation or drawback with KnowledgeBuild on Rdb? And how to sell Rdb 
    with KnowledgeBuild but not KnowledgeBuild on IDMS?  
    
    Thanks
T.RTitleUserPersonal
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256.1Is it Available Now?BROKE::BOOTHWhat am I?...An Oracle?Sat Nov 26 1988 20:045
    I didn't know Knowledgebuild would currently run on Rdb. Cullinet
    has been saying that Knowledgebuild will one day run on Rdb. But
    I thought that was still a future.
    
    ---- Michael Booth
256.2Why not Rally?THATIS::SIMPSONFile under Common KnowledgeMon Nov 28 1988 13:523
Which version of Rally did they evaluate? If it was V1.1 then I quite
understand their reservations. If its V2.0 then I'd be very suprised that they
don't like it, unless the demonstration was inept. This product is excellent.
256.3Ask the vendorBANZAI::CAMERONBuy their tools and we'll give you the engineMon Nov 28 1988 14:452
	Have you called cullinet and asked them to send you some information? 
	They would know.
256.4Rally V2.0 is still too slowHGOVC::ALANCHANALAN CHANTue Nov 29 1988 11:005
	We have been working on a prototype using Rally 2.0 and RDB 5.0.
	The Rally has been shown to be slow compared with Ingres etc.

	
256.5This is utter nonsenseTHATIS::SIMPSONFile under 'Common Knowledge'Thu Dec 01 1988 13:1410
RE: -1

	Can you explain further please? The only reasons that I can see for
Rally being slow is if the designer of the protoype does not understand how
Rally interacts with Rdb (poor transaction control), or if the Rdb 
database has not been designed well wrt the Ingres implementation that you 
mention. Rally itself is pretty efficient.

	If you've got a small demo database and pass me the Rally AFILE I'll
spend a little time to give you some pointers.
256.6Immature productHOGAN::RAKThu Dec 01 1988 20:2117
			KNOWLEDGEBUILD IS BUGGY.

I've never seen a DEC product with as many flaws as Cullinet's knowledgebuild.

Knowledgebuild offers less functionality than Rally.

The net effect of these two deficiencies is that developers spend
large amounts of time tweaking workarounds in knowledgebuild.  I
doubt knowledgebuild offers significant productivity gains (over
3GL's) for anything other than elementary applications.

If your customer wants COBOL, look at the COBOL Code Generator.  
This product is targeted at a more sophisticated developer than Rally, 
but it produces cleaner COBOL than knowledgebuild.

I would not recommend Knowledgebuild on any database platform.
256.7Cobol Gen with Rdb V3.0HGOVC::SHIRLEYCHANSun Dec 04 1988 02:577
    My client don't like Rally because it can't produce a complied output
    and the execuable version can't be installed in order to share memory.
    
    Is COBOL GENERATOR working well with Rdb V3.0? In the pass, it was
    very easy to generate bug check dump when using COBOL GEN to generate
    precompile Rdb statement. Someone recommend to use callable RDO
    statement which is interpret during run time.
256.8THATIS::SIMPSONFile under 'Common Knowledge'Mon Dec 05 1988 16:2513
RE: -1. I'll contact you offline (its an Rdb notes conference after all!). This
"can't produce compiled output" represents a misunderstanding in how an object
oriented approach works.

Now, as for VAX Cobol Generator. It is a super product, but it currently does 
have severe limitations in the way that it works with Rdb. Some of these are
being addressed in the current field test; others are due later. I would read
the Generator notesfile (press kp7 to add to your notebook) and then place your
question directly there.

Regards

Steve