Re: OODB/Valentina-Revolution
On Sunday, Dec 21, 2003, at 12:40 America/Denver, Rob Cozens wrote: I, for one, am unsure of your definition of OODB or the specific db structure you wish to support. I started a response to your original query re OODB; but trashed it because (a) I wasn't sure it was pertinent and (b) I could not find and current links to the product on the 'net. Object-Oriented databases are similar in concept to the Object-Oriented application that Revolution is reputed to be. The primary difference is that they focus more on the data aspects. One of the interesting features is the idea that children data objects inherit their primary characteristics from their parent. Valentina puts itself forward as a OODB with relational aspects as well. A hybrid, if you will. And if it is as it claims it looks very promising for something I am intent upon accomplishing come next year. As it might overcome one of the problems with OODBs mentioned in a discussion earlier, on this listservchanges to the data structure that might require extensive manual intervention in order to maintain the final application. Before discussions on the HyperCard List convinced me to write my own database, I purchased a license for Answer Software's HyBase [I'm hazy on the company name, it was in Palo Alto, Sunnyvale, or thereabouts]. HyBase was touted as a fourth-generation database capable of supporting code segments and objects. It was delivered as a set of extensions in HyperTalk external format. It looked promising & powerful to me; but (1) it was overkill for my needs and (2) by using my own db I have no liability for royalties when distributing my products. Never heard of HyBase before. I'll look into that possibility. I'm looking at using January for analysis of options and making the purchases in February, if not sooner. I really don't know if this has any relevance to your question; but if you want to take another shot at describing the data structure(s) and functionality you want to support, I'll ponder whether/how one might support them in SDB. It was helpful for me. Merry Christmas, Chuck ___ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
Re: OODB/Valentina-Revolution
On Friday, Dec 19, 2003, at 11:25 America/Denver, Chuck Pelto wrote: On Friday, Dec 19, 2003, at 11:13 America/Denver, Dar Scott wrote: Valentina has some features I like that are called OO in its docs IIRC, though they might not be what you are looking for or what others call OODB. It has a nice, well-founded marriage of relational structure and pointers. Interesting. Someone over on the F-Pro listserv mentioned Valentina and I'm looking at it. Can anyone answer some questions about how far I can take Revolution-Valentina in terms of R/OO DBMS? Here's the E-R concept: Four data files: File1 - Parent File2 - Parent File3 - Many-to-Many link of File1 and File2 File4 - Child of File1 which would show info in File3 wherever a File1 record is linked to in File3. Regards, Chuck I guess, by the silence from my earlier post (see above), that the likelihood of doing what I propose in the Revolution-Valentina environment is rather slim? Or maybe I'm just not explaining it correctly? What is the relationship between Valentina and Revolution in the first place? How do they interact? Has anyone done a relational-database using Revolution-Valentina? Thanks, Chuck ___ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
Re: OODB/Valentina-Revolution
On Friday, Dec 19, 2003, at 11:13 America/Denver, Dar Scott wrote: Valentina has some features I like that are called OO in its docs IIRC, though they might not be what you are looking for or what others call OODB. It has a nice, well-founded marriage of relational structure and pointers. Interesting. Someone over on the F-Pro listserv mentioned Valentina and I'm looking at it. Can anyone answer some questions about how far I can take Revolution-Valentina in terms of R/OO DBMS? Here's the E-R concept: Four data files: File1 - Parent File2 - Parent File3 - Many-to-Many link of File1 and File2 File4 - Child of File1 which would show info in File3 wherever a File1 record is linked to in File3. Regards, Chuck ___ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
OODB
Greetings, Is anyone here familiar with Object-Oriented Data Base systems? And is there anything like one that can be hooked to via Revolution as a front-end? Thanks, Chuck ___ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
Re: : New Here...
Greetings All, Taking a break from bird prep activities to check the mail. Lots of interesting advice and commentary. Some replies to comments: I have FMP Developer. Doing a hybrid would be no problem on that account. The interesting part, which I have not thought too deeply on would be networking the 'solution' from FMP's perspective. Last I looked they didn't like stand-alones to be networkable. [Note: I've abused them over this and other such failings on FMI's part.] I might have to knuckle-down and do the database thing inside of Rev in order to overcome that issue. Follow-on questions, after perusing the tutorial: [1] Can I declare an object to be a button? And run scripts when it is clicked on? [2] The Enterprise version is ODBC-aware? Then I should be able to find a way to hook into it via AppleScripting for changing data. However, command/control and inter-operability with other apps would still be something of an issue. [3] How does Rev deal with the passage of time and Idle() activities? Can it be set to check for a change in status? Or does it require an outside agent to activate a script? Example: Every 60 seconds do myCheck(). Or does something have to nudge it, as an external applescript would do by calling a ScriptMaker script inside of an FMP datafile? Back to the bird. Thanks, Chuck ___ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
Re: New Here...
Greetings Brian and Xavier, Thanks for the quick responses. Yes, I'm dinking around with the tutorial and getting the impression that Revolution is not the relational database thing I was searching for on TUCOWS, where I found it. It's an advanced HyperCard system. I did some things with HyperCard in the 80s. But not very much. Building a relational database in Revolution could be a bit of a bother. However, Brian's suggestion of using an FMP Solution behind the Revolution GUI seems interesting as FMP's limited graphics capabilities present a problem to a project I'm grappling with. I need something on which I can depict a map, move/show/hide icons, display textual information based on information held in a relational database environment. It would be best if it was an integrated system instead of a hybrid, but it may have to be the latter. Has anyone built a relational database management system to work with Revolution? One they'd be willing to sell? Well... ...enough of this for now. I have to go prepare a bird for the feast. Regards, Chuck ___ use-revolution mailing list [EMAIL PROTECTED] http://lists.runrev.com/mailman/listinfo/use-revolution
