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Replication in ElevateDB? |
Tue, Aug 15 2006 12:39 AM | Permanent Link |
(Tim
You listed "Need to add replication and syncronization capabilities to DBISAM" on your list of current developments. Will replication be included in the initial release of ElevateDB? Replication is required by my client AND needed soon. I understand that you don't wan't to talk too much about the features and timing of ElevateDB, but I'm considering licensing Context Software's DB Extensions, primarily for their replication. If I do, then I may have to... Delay migrating to ElevateDB until Context supports ElevateDB OR Delay implementing replication until Context supports ElevateDB OR Reinvent the (replication) wheel If ElevateDB will support replication, then I can implement ElevateDB and ElevateDB replication ASAP, letting Context catch up, whenever. Alternatively, if Context is working in concert with ElevateDB's release and support will be quick - that could work too! Chuck Hall | |
Tue, Aug 15 2006 12:06 PM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. timyoung@elevatesoft.com | Chuck,
<< You listed "Need to add replication and syncronization capabilities to DBISAM" on your list of current developments. Will replication be included in the initial release of ElevateDB? >> I can't say for sure at this point, but it looks like no, at least initially. The one item that has a question mark next to it is replication. EDB is engineered for replication capabilities, meaning that it has information in the rows and tables that allow it to track versions of rows, whether replication is enabled, etc. However, the code still needs some work. Also, because cached updates rely on the replication for functionality, it will also not be available most likely in the initial release. -- Tim Young Elevate Software www.elevatesoft.com |
Tue, Aug 15 2006 1:40 PM | Permanent Link |
Sean McCall | Tim,
Is this by chance heading towards row versioning like Interbase? Sean Tim Young [Elevate Software] wrote: > EDB is engineered for replication capabilities, meaning that it has > information in the rows and tables that allow it to track versions of rows, > whether replication is enabled, etc. However, the code still needs some > work. |
Tue, Aug 15 2006 2:00 PM | Permanent Link |
Jason Lee | Yikes! OK, time to backpeddle on one big project of mine.
Does anybody know of a DBMS with most of the great features we all know and love in DBISAM that does do replication? (Don't worry Tim, just this one particular project; I will always remain a DBISAM fanatic!) ~Jason Lee Tim Young [Elevate Software] wrote: > I can't say for sure at this point, but it looks like no, at least |
Tue, Aug 15 2006 2:07 PM | Permanent Link |
Jason Lee | On the other hand, if the versioning infrastructure will already be part
of the record structure in EDB, then it shouldn't be too big of a stretch to implement a method of replication myself--right? ~Jason Lee Jason Lee wrote: > Yikes! OK, time to backpeddle on one big project of mine. > Does anybody know of a DBMS with most of the great features we all know > and love in DBISAM that does do replication? (Don't worry Tim, just this > one particular project; I will always remain a DBISAM fanatic!) > > ~Jason Lee > > > Tim Young [Elevate Software] wrote: >> I can't say for sure at this point, but it looks like no, at least |
Tue, Aug 15 2006 4:20 PM | Permanent Link |
"Ralf Mimoun" | Tim Young [Elevate Software] wrote:
.... > I can't say for sure at this point, but it looks like no, at least > initially. The one item that has a question mark next to it is > replication. Ok, let me get a stick and stir further Are there plans for mirroring? You know, 2 DBISAM DBs on different machines with the same state, for fault tolerance? Yes, I know, enterprisish... Ralf |
Tue, Aug 15 2006 6:34 PM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. timyoung@elevatesoft.com | Sean,
<< Is this by chance heading towards row versioning like Interbase? >> No, it's a different kind of versioning. Eventually we do plan on offering a higher-end server that does multi-versioning, etc. but that will work much differently than Interbase also. -- Tim Young Elevate Software www.elevatesoft.com |
Tue, Aug 15 2006 6:34 PM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. timyoung@elevatesoft.com | Jason,
<< On the other hand, if the versioning infrastructure will already be part of the record structure in EDB, then it shouldn't be too big of a stretch to implement a method of replication myself--right? >> Unfortunately it isn't visible to the end developer. It's used internally to determine when a row was last replicated and whether it has changed since that time. -- Tim Young Elevate Software www.elevatesoft.com |
Tue, Aug 15 2006 6:37 PM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. timyoung@elevatesoft.com | Ralf,
<< Ok, let me get a stick and stir further Are there plans for mirroring? You know, 2 DBISAM DBs on different machines with the same state, for fault tolerance? Yes, I know, enterprisish... >> Well, it isn't in there natively, but you could certainly do it with triggers fairly easily, and the table and column constraints will make sure both database copies are valid at all times. -- Tim Young Elevate Software www.elevatesoft.com |
Tue, Aug 15 2006 8:48 PM | Permanent Link |
Jason:
You could try DBISAM 4 and ContextSoftware's (www.contextsoft.com) database extensions like I'm considering. DBISAM 4 would be a smaller leap to EDB, once EDB supports replication or ContextSoftware supports both EDB and replication. The limited demos, documentation typos, and lack of newsgroup/forum for ContextSoftware makes me skeptical, but they are mentioned favorably and often in this newsgroup. Incidentally, I don't know why my name doesn't show up in the "From" column in my news reader (Outlook Express). It is listed in the properties for this newsgroup. Chuck Hall "Jason Lee" <computerguy@wavecable.com> wrote in message news:8B745973-1BCD-4356-9612-7F9FF6016CB0@news.elevatesoft.com... > On the other hand, if the versioning infrastructure will already be part > of the record structure in EDB, then it shouldn't be too big of a stretch > to implement a method of replication myself--right? > > ~Jason Lee > > Jason Lee wrote: >> Yikes! OK, time to backpeddle on one big project of mine. >> Does anybody know of a DBMS with most of the great features we all know >> and love in DBISAM that does do replication? (Don't worry Tim, just this >> one particular project; I will always remain a DBISAM fanatic!) >> >> ~Jason Lee >> >> >> Tim Young [Elevate Software] wrote: >>> I can't say for sure at this point, but it looks like no, at least |
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