473,708 Members | 2,411 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Accessing DBMS remotely: MySQL? FireBird?

Hi,

Some of our customers have remote offices. I was wondering if it'd be
safe to have a DBMS running at their central office, and have our
client application running on hosts in the branches connect to it
through a VPN via the Net?

What happens if the connection goes south while a branch office was
making changes? Does the DBMS just rollbacks changes automatically
after a time-out?

Should we set up some kind of replication instead?

Also, are there compeling reasons to go for Firebird instead of MySQL?
I don't know enough about the capabilities of each DBMS today to make
an educated choice.

Thank you for any tip
Fred.
Jul 20 '05 #1
10 1927
couple of notes....
Sounds like the app's not browser based.... ( that may take care of your
problem...)
how fast is the link between the offices? I'm sure it's over the internet
right? (no private network).
Don't forget... if data not sensitive, you may not need a vpn. (SLOOOWWW).
Replication models should be based on the "just on time-liness" need of the
data.
do they need it REALtime, NEARtime, or tomorrow? That's the question that
should give you your
replication answer (IMO)
"Fred the man" <fr**@acme.co m> wrote in message
news:a1******** *************** *********@4ax.c om...
Hi,

Some of our customers have remote offices. I was wondering if it'd be
safe to have a DBMS running at their central office, and have our
client application running on hosts in the branches connect to it
through a VPN via the Net?

What happens if the connection goes south while a branch office was
making changes? Does the DBMS just rollbacks changes automatically
after a time-out?

Should we set up some kind of replication instead?

Also, are there compeling reasons to go for Firebird instead of MySQL?
I don't know enough about the capabilities of each DBMS today to make
an educated choice.

Thank you for any tip
Fred.

Jul 20 '05 #2
couple of notes....
Sounds like the app's not browser based.... ( that may take care of your
problem...)
how fast is the link between the offices? I'm sure it's over the internet
right? (no private network).
Don't forget... if data not sensitive, you may not need a vpn. (SLOOOWWW).
Replication models should be based on the "just on time-liness" need of the
data.
do they need it REALtime, NEARtime, or tomorrow? That's the question that
should give you your
replication answer (IMO)
"Fred the man" <fr**@acme.co m> wrote in message
news:a1******** *************** *********@4ax.c om...
Hi,

Some of our customers have remote offices. I was wondering if it'd be
safe to have a DBMS running at their central office, and have our
client application running on hosts in the branches connect to it
through a VPN via the Net?

What happens if the connection goes south while a branch office was
making changes? Does the DBMS just rollbacks changes automatically
after a time-out?

Should we set up some kind of replication instead?

Also, are there compeling reasons to go for Firebird instead of MySQL?
I don't know enough about the capabilities of each DBMS today to make
an educated choice.

Thank you for any tip
Fred.

Jul 20 '05 #3
Also, if you use InnoDB tables, then you won't have a problem if the link
fails provided you use transactions for the SQL. So you turn off auto
commit and then perform the transaction. If there is a network failure,
then the commit never happens and you can simply re-issue the command when
the network link comes back up.
"bobb" <ra*****@hotmai l.com> wrote in message
news:3T******** **********@nwrd dc02.gnilink.ne t...
couple of notes....
Sounds like the app's not browser based.... ( that may take care of your
problem...)
how fast is the link between the offices? I'm sure it's over the internet
right? (no private network).
Don't forget... if data not sensitive, you may not need a vpn. (SLOOOWWW).
Replication models should be based on the "just on time-liness" need of the data.
do they need it REALtime, NEARtime, or tomorrow? That's the question that
should give you your
replication answer (IMO)
"Fred the man" <fr**@acme.co m> wrote in message
news:a1******** *************** *********@4ax.c om...
Hi,

Some of our customers have remote offices. I was wondering if it'd be
safe to have a DBMS running at their central office, and have our
client application running on hosts in the branches connect to it
through a VPN via the Net?

What happens if the connection goes south while a branch office was
making changes? Does the DBMS just rollbacks changes automatically
after a time-out?

Should we set up some kind of replication instead?

Also, are there compeling reasons to go for Firebird instead of MySQL?
I don't know enough about the capabilities of each DBMS today to make
an educated choice.

Thank you for any tip
Fred.


Jul 20 '05 #4
Also, if you use InnoDB tables, then you won't have a problem if the link
fails provided you use transactions for the SQL. So you turn off auto
commit and then perform the transaction. If there is a network failure,
then the commit never happens and you can simply re-issue the command when
the network link comes back up.
"bobb" <ra*****@hotmai l.com> wrote in message
news:3T******** **********@nwrd dc02.gnilink.ne t...
couple of notes....
Sounds like the app's not browser based.... ( that may take care of your
problem...)
how fast is the link between the offices? I'm sure it's over the internet
right? (no private network).
Don't forget... if data not sensitive, you may not need a vpn. (SLOOOWWW).
Replication models should be based on the "just on time-liness" need of the data.
do they need it REALtime, NEARtime, or tomorrow? That's the question that
should give you your
replication answer (IMO)
"Fred the man" <fr**@acme.co m> wrote in message
news:a1******** *************** *********@4ax.c om...
Hi,

Some of our customers have remote offices. I was wondering if it'd be
safe to have a DBMS running at their central office, and have our
client application running on hosts in the branches connect to it
through a VPN via the Net?

What happens if the connection goes south while a branch office was
making changes? Does the DBMS just rollbacks changes automatically
after a time-out?

Should we set up some kind of replication instead?

Also, are there compeling reasons to go for Firebird instead of MySQL?
I don't know enough about the capabilities of each DBMS today to make
an educated choice.

Thank you for any tip
Fred.


Jul 20 '05 #5
On Sun, 02 May 2004 14:48:31 GMT, "bobb" <ra*****@hotmai l.com> wrote:
Sounds like the app's not browser based.... ( that may take care of your
problem...)
Indeed. It's written in VB. Until now, customers only used our apps in
a LAN, but some of them now have branches, hence the problem of
accessing data through ADSL with a VPN between the two locations.
how fast is the link between the offices? I'm sure it's over the internet
right? (no private network).
512Kbps at the branch, 1024Kbps at the main office. FWIW, Terminal
Services works very well, which is what I recommended they set up
until we sort things about with a DBMS.
do they need it REALtime, NEARtime, or tomorrow? That's the question that
should give you your >replication answer (IMO)


They make changes to records all day long, so real/near time is a
requirement.

Thank you
Fred.
Jul 20 '05 #6
On Sun, 02 May 2004 14:48:31 GMT, "bobb" <ra*****@hotmai l.com> wrote:
Sounds like the app's not browser based.... ( that may take care of your
problem...)
Indeed. It's written in VB. Until now, customers only used our apps in
a LAN, but some of them now have branches, hence the problem of
accessing data through ADSL with a VPN between the two locations.
how fast is the link between the offices? I'm sure it's over the internet
right? (no private network).
512Kbps at the branch, 1024Kbps at the main office. FWIW, Terminal
Services works very well, which is what I recommended they set up
until we sort things about with a DBMS.
do they need it REALtime, NEARtime, or tomorrow? That's the question that
should give you your >replication answer (IMO)


They make changes to records all day long, so real/near time is a
requirement.

Thank you
Fred.
Jul 20 '05 #7
On Mon, 03 May 2004 08:30:39 GMT, "OneSolutio n"
<on*********@sb cglobal.net> wrote:
Also, if you use InnoDB tables, then you won't have a problem if the link
fails provided you use transactions for the SQL. So you turn off auto
commit and then perform the transaction. If there is a network failure,
then the commit never happens and you can simply re-issue the command when
the network link comes back up.


Cool :-) The documentation didn't make that clear, since they
mentionned isueing the "rollback" command, so I was wondering if it
could be done automagically when a connection is severed halfway
through a transaction.

Thank you
Fred.
Jul 20 '05 #8
On Mon, 03 May 2004 08:30:39 GMT, "OneSolutio n"
<on*********@sb cglobal.net> wrote:
Also, if you use InnoDB tables, then you won't have a problem if the link
fails provided you use transactions for the SQL. So you turn off auto
commit and then perform the transaction. If there is a network failure,
then the commit never happens and you can simply re-issue the command when
the network link comes back up.


Cool :-) The documentation didn't make that clear, since they
mentionned isueing the "rollback" command, so I was wondering if it
could be done automagically when a connection is severed halfway
through a transaction.

Thank you
Fred.
Jul 20 '05 #9

"Fred the man" <fr**@acme.co m> wrote in message
news:eo******** *************** *********@4ax.c om...
On Sun, 02 May 2004 14:48:31 GMT, "bobb" <ra*****@hotmai l.com> wrote:
Sounds like the app's not browser based.... ( that may take care of your
problem...)
Indeed. It's written in VB. Until now, customers only used our apps in
a LAN, but some of them now have branches, hence the problem of
accessing data through ADSL with a VPN between the two locations.
how fast is the link between the offices? I'm sure it's over the internet
right? (no private network).


512Kbps at the branch, 1024Kbps at the main office. FWIW, Terminal
Services works very well, which is what I recommended they set up
until we sort things about with a DBMS.


Yea, I'd think that'd be the way to go. I'm not a big fan of terminal
services (as much as
I was anyway). Without it though, you'd either have to do local app and
then connect (odbc, ado, whatever)
remotely OR worser, remote app + remote database. At least with terminal
services
you take the time-out out of the picture. imo.
good luck.
bobb
do they need it REALtime, NEARtime, or tomorrow? That's the question thatshould give you your >replication answer (IMO)


They make changes to records all day long, so real/near time is a
requirement.

Thank you
Fred.

Jul 20 '05 #10

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

8
3658
by: Lothar Scholz | last post by:
Because PHP5 does not include the mysql extension any more is there a chance that we will see more Providers offering webspace with Firebird or Postgres Databases ? What is your opinion ? I must say that i like it to see mysql replaced by a real database (stored procedures etc.)
175
11457
by: Sai Hertz And Control Systems | last post by:
Dear all, Their was a huge rore about MySQL recently for something in java functions now theirs one more http://www.mysql.com/doc/en/News-5.0.x.html Does this concern anyone. What I think is PostgreSQL would have less USP's (Uniqe Selling Points
39
8409
by: Mairhtin O'Feannag | last post by:
Hello, I have a client (customer) who asked the question : "Why would I buy and use UDB, when MySql is free?" I had to say I was stunned. I have no experience with MySql, so I was left sort of stammering and sputtering, and managed to pull out something I heard a couple of years back - that there was no real transaction safety in MySql. In flight transactions could be lost.
20
5895
by: Dave | last post by:
Hi I have been asked to implement an error logging/management database for the network technicians in our company. The idea is that staff using workstations can enter a database and log any problems they are having, while the technicians can pull off details of faulty equipment. The users will have little experience of databases so the system needs to be customized to allow users access to facilities via simple a gui. The network is ...
10
2403
by: Mike | last post by:
I recently had a Microsoft Access 97 database corrupt on me. The setup is a split database (front end/back end) setup with about 10-15 users. This is the first corruption in something like a year. The database has about 25 tables, and the total size is about 15MB, after a compact. The front end sits on users Windows 2000 Professional desktops, and the file server is a Windows 2000 Server. I've been thinking of migrating the back end,...
3
4319
by: prodirect | last post by:
Hi all, I hope someone can help me. I've recently created a database and wanted to put it up on an ftp sight so that multiple people could access the same tables at the same time from different geographical locations. I have been completely unsucessful in acheiving this goal so far however. Things I have tried: Create a shortcut to ftp sight via browser then tried to map local drive to
20
1987
by: Vincent V | last post by:
Hey guys im about to start a large project and am wondering what DB server to use I have the Choise of MySql(innodb) or if i pay a bit extra i can get MS SQL 2000 The concerns i have -What type of limited functionality will i come accros with MYSQL ie No stored POCS -Limitations with the RDBMS system of innodb If i go with MySQL + Innodb i think this will be offer the fastest runtime
1
1920
by: varun chadha | last post by:
i am a newbie to python and is working on an application which needs to connect to the database. can anyone guide me through the DBMS that i can use and the module to connect to it. currently i have MySQL installed using the link on the python.org site but is unable to connect to it through python. pls specify the link to the tutorials which can guide to connect and execute my query. hopes u understood what i meant to say. thanks in...
8
3050
AmberJain
by: AmberJain | last post by:
Hello, My new semester has started and I have a subject named DBMS (Database Management System). This is the first time I'm studying databases and so I'm not feeling very enthusiastic about databases (partly because I already had learnt C/C++ and I feel that programming is a lot easier that DBMS). Nevertheless, I must learn at least one DBMS as it is part of my college course. I'm confused and I want some suggestions: Que-1: There are a...
0
8697
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
9290
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
1
9061
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
9001
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
1
6615
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
4454
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
0
4713
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
3151
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
3
2097
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.