I've been tasked with writing a Mac App in xcode 4.3 that can search and display data from a publicly available MS Access Database that's updated regularly. For this reason, I can't just convert the file to a different database platform. I've searched the depths of Google and can't find anyone else attempting such a task.
Can anyone point me in the right direction?
You may try to use 3rd party tools that provide connectivity like actualtech one.
http://www.actualtech.com/product_access.php
I personally never tried this one, but it looks promising.
I believe there are no native Microsoft support for other platforms than Windows.
If the database is in an MDB file, you could try using this online MDB to MySQL converter.
You could write a daemon that fetches the latest SQL dump daily or even hourly and stores it in a local SQLite file. Then your client app just needs to query the local file.
I know it's not as convenient as connecting to the database directly, but this is a 'free' solution.
Related
Every relationship database can be used without the need for installation of any software or tools, as most of the query read/write is all done to read a file that stores data in a specific format.
Can the same thing be done with a graph database (doesnt have to be neo4j, i wouldnt mind an alternative) without installing software, or having terminal endpoint running for access to database?
Example:
MySql is a db file you can query
MSSQL is a db file you can query
SqlCE is a db file you can query
Sqlite is a db file you can query
Neo4j: You need to download, install, have running and query through ip address?
OR... pay higher rates (2-5x cost?) for graph DB hosting in comparison to RDMS which is so inexpensive, it's practically given for free for most web hosting services.
Purpose and Reasoning for Question
I'm looking for some cost efficient solutions to run a graph database
with all the bells and whistles, that i can run from web host or
application (that only handle IIS and hard-file transfer services --
maybe it can do netcore, but dont know if you can run graphdb through
netcore as a module service).
Yeah, MSSQL is doing it now, but it's
limited in what it can do and handle, as well as the tutorials are
lacking in how to properly write NoSQL queries as fluent as the SQL
stuff...
Well, i found the answer to my question, and it's "yes, you can create a standalone graph.db to query from (in neo4j)." However it's only limited to Java and not supported by other languages or frameworks.
Neo4j calls it an "embedded" database. Which is exactly what i was asking in my question, though i was hoping to be able to use the services in a .net application, which turns out to not be compatible.
If anyone has any alternate solutions that can work with netcore, i would love to see it posted here. I'm happy to know that i was right, and that it is possible to run queries on a hard file. Just disappointed that because neo4j is native to java, the technology is only available to java apps. Has no one written a c# port yet? (Not in-memory, but to and from hard file.)
Anyways, i'll continue to research and look more into all of this. Thank you.
Edit-1: Graph database for .NET
well for example you have build a program, for restaurant, for a cinema, wherever,
now how do you do when, you install your application, the database was installed correctly too? i dont sure but i believe this is a different database? for example a file?
(talking about sql).
and how different are going to be the queries? cuz i believe i am not going to have the same function on sql server than a file database
and what connection i shall use?
could i use entity framework?
and how capacity could to have the different file for databases?
regards
You can use a file-based database like SQLite that supports SQL queries. There are ADO adapters available as well. The link should take care of the rest of your questions as well.
Well, since you usually have absolutely no knowledge about target environment, user must configure program to his envronment at install time, or later (af first launch for example, this is much simplier than implement same functionality in installer). User specifies SQL server address (if we are talking about server-based systems) and database name he wants to use. Then database is created programmaticaly using that information.
I got a .db database file which one of my friend created through PowerBuilder 6 in Win98. Later I wanted to test that database file, but was not able to view or open it in any of common db viewer and not able to get any data out of it.
please help..
I am using Win7 and do have xp(virtual).
The problem with your description is that PowerBuilder is database-agnostic, so it could be any type of database if it was being used with a PowerBuilder application. However, if you want to go with probabilities (and I'm not sure this is how PB is used most; at one point the most popular database used by PowerBuilder was Oracle), PowerBuilder shipped with a run time license for SQL Anywhere, a database that was originally Watcom, acquired by Powersoft, which was acquired by Sybase, which was acquired by SAP.
Supposing the database you have in hand is SQL Anywhere, you need to get a SQL Anywhere engine. Probably the first thing I'd try is downloading the Developer version of SQL Anywhere and just try to open up a copy with that, see if the software will migrate it to the current version. (My bet is that it will, or will at least provide you with a means.) Another way to get a current version of SQL Anywhere (I think; I haven't tried this in ages) is to download a trial version of PowerBuilder 12.5, which I think comes with SQL Anywhere (the paid version does). If you get that up and running, then you can use a pipeline object in PowerBuilder to pretty easily move data from one database to another. And, for kicks, you can migrate up your PB6 app to see if it still runs. (My bet is that it will take a few tweaks, but fewer than you're probably imagining.)
Good luck,
Terry.
Your .db file is probably a Sybase SQL-Anywhere database. You need to know which version of the engine was used to create the database and then you need the ODBC driver to access that database.
I'm having trouble figuring out databases in VB.NET. (VS 2008)
What control(s) do I need to use and how do I use them? I am ,looking for tutorials and sample code too.
I'm working on a trivia game where the admin can remove and add questions to a database.
EDIT:
The program must be able to do all of the DB interactions itself through code.
Regarding DB portability...
I do not intend to install it on many machines, so portability is not a major issue, but I's rather not be bound to Access or SQL Server. (Is that possible? - A portable database file?)
A bit more complaining...
I really need help with connection strings and the whole DB gamut in VB. I've done DBs in PHP so I'm not completely ignorant. It's the VB side of things that's confusing.
Thanks.
Have you considered SQLite DB? It's a very small DB and is used my many vendors. I have not used SQLite personally, but I do know that Firefox uses it and so does iPhone (from what i've read).
SQLite does not require you to install anything (as per the post below). It's a nice alternative to Access or carrying around SQL Server Express.
If you do decide to use SQL Server Express, you will be required to install the run-time, from here for each machine it's used on.
Below are some links which may help you get started
Google for SQLite DB
ADO.NET 2.0 Provider for SQLite
And finally, here's a blog post outlining how to get it done, and quickly.
Cheers!
I would suggest Microsoft's Enterprise Library - The hands on labs available make it a breeze to setup access to a database, and can make it as simple as a config change to point to a new/different DB.
Also, check out http://connectionstrings.com/ for related info.
Hi everyone I hav a small problem in uploading my database. I have created a localhost website on my pc for a vehicle tracking system and now i have no clue in uploading it. It's got two Microsoft Access databases in my pc which is used in the website and they get updated at very regular intervals(almost every second) it has to be uploaded to the web real time. Right now I use ODBC on a localhost..
Does anybody have any idea how to do it?
Please help if so...
Depending on your traffic using ACCESS in a webserver multi user environment will be a real pain. (File in access, etc). Perhaps try to build a webservice to make changes directly on the server?
If you don't want to use ODBC you may have a look at ADO connectionstrings (www.connectionstrings.com is a goot starting point).
I would concur with #Sascha I wouldnt even bother wasting the time trying to run your site with access.
Depending on your host you should have access to a free mysql or mssql database. Use this instead. Write a new page that takes parameters and writes them to your online database, that way you can set up a relay on your machine that pushes the changes from your local machine to the web.
This is definitely not easy, but it can be done. You would need to run a SQL Server database on the web server, and then push the data from Access to SQL Server, or pull it from SQL Server.
We've got a couple of links talking about it at SQLServerPedia:
How can I synchronize data between MS Access and SQL Server databases?
How can I link a SQL Server database to MS Access using link tables in MS Access?
Again, it's not easy - judging by the way you worded the question, you're not going to like the answers that you'll read about. You may want to bring in someone who's experienced with web-based databases and replication in order to bring you up to speed and set your expectations about how challenging this will be.