I have access to a remote Oracle database when using Toad or SQL Developer.
The connection is specified by a TNS record and user+password of course.
Now I wish to have a local webpage that shows (regularly refreshed) data from the database. At first I was thinking of using php but I guess that can only be used on the server itself and I am unable to create files on the server. Of course a server page would be more suitable when there's multiple users but here there's only one.
In fact I just want to do the same as is done by running queries from the tools mentioned, but now called from a custom webpage. I feel this should be possible because the tool has to establish the connection from client to server db also; but I don't know how to set up my local client webpage(s).
Is this possible by applying php or javascript if that's more suitable?
Well you have to understand that the functionality of connecting to oracle database is packaged as part of frameworks, there are no such frameworks in javascript which can help you.
you are right with php, however it needs a webserver to run and they are free :)
the reason why php can connect to oracle database is, it has the framework to do those operations.
for now the answer is no.
or you can see if you can write an Activex which can connect to Oracle database and refresh, microsoft provides framework / api to connect to databases
The best way to do that kind of thing is AJAX: a javascript code calls a PHP page on the web server, this page connects to the DB and returns data to the javascript that updates the page.
Related
I have a simple MySQL database (one table with 12 rows of data and 5 columns) sitting on the web-server of my host provider.
On my home PC I create the data programmatically and store it in a free version of SQL Server (on my home PC). I would like to "upload" this data to the MySQL db in real time (or as close as I can get) over the internet (I'm assuming this is the only way to connect the pipes).
I know that opening up a MySQL database to a remote internet connection probably is not a "secure" thing to do, but the resulting data table will be publicly available anyway via an "app" so I'm not too worried about that (I suppose a hacker could "overwrite" my data with their own if they were both industrious and inclined) but I think the risk/reward is so small its not a major concern.
Anyway, what is the easiest way to do this with some semblance of security? I only know how to program in VB (I did a little HTML and ASP back in the day, but that was a long time ago). I could learn a few lines of code in another language if need be.
I do not have a static IP, and I've never actually interacted with a MySQL database before (only SQL server, so my MySQL knowledge/ familiarity is zero...but a db is a db, so how hard can it be?). Because of my home network firewall, I can't allow connections "in". I will have to make the connection to the MySQL db "out" from my home PC --> to the hosted database.
Ok this problem is not actually super simple.
What you will find is most shared hosting providers do not allow just any IP to access their databases.
Solution? set the IP for your computer of course! BUT.....you are probably on home internet connection so your IP address can CHANGE (if you have a static IP you are a lucky person!)
So the best way - create a mini-API!
Basically, you want to post your data to a script (with some security of course) that then inserts this data into the database.
It is a lot of work but having done all this before it seems to be the only way unless you have a dedicated server / advanced access privileges!
You could take a look at WAMP for your home pc. It's simple to use.
And then you should take a look at Mysql remote connections(some details here)
I would try this:
At your local computer install MySQL server, there's a free community
edition available for download, try the web installer since its more lightweight. Use the
custom installation and make sure MySql Workbench is selected too.
Workbench has a migration tool for the most common databases, Try this locally, so you can tell if all your data is correctly migrated from your local SQL Server to a MySQL db and there are no data losses in the process.
Then, You could probably connect through Workbench to your online MySQL db
and migrate your data to it directly from your just created local db. In case you cannot connect, make a backup of your local db and send the files to
your server by ftp or similar process. Then, simply restore DB from the backup file on your
online server.
Hope this helps!
I have an application written in VB.net that runs on a clients pc.
I also have a website written in mostly javascript, http and php.
The thing I want to do is to connect the website to the application, so that when i.e. a certain button is pressed, it connects to the client application and raises an event.
I have tried approaches like TCP socket communication by having a TCP Socket Server running in the background of the client application. I can connect to the server by having a client connection from another vb.net application, but whenever I try to connect through PHP it fails. (I have only tried PHP since server-side scripting seems to make more sense in this case)
Another approach I have tried is to have an HTTP server running in the background of my desktop application and then have a PHP script connect to it, that fails as well.
One thing that I've been thinking about as a last resort is to simply have a textfile on the webserver and a PHP script writing to it after given parameters and then have the client application to read the file every few seconds. But this wouldn't be very efficient with larger amounts of data, would it?
What is the proper way of doing this?
If you have any questions about the code I've been using, feel free to ask.
If you don't get my blurry explanation, try this image: http://i.imgur.com/8njxVFj.png
Thanks in advance.
To have your data more organized i would suggest you to store your data on a database server for example mysql (which is free).
is it necessary to use php to connect to the MySQL
i am working the desktop application and do not have a knowledge of php either
is there any in build class or functionality that can be use to connect to the MySQL
although there are many programme present over the internet to do so but unablefind one without the use of php. is there any reference or can i have the step by step example regarding the work.
MySQL config has the default settings. like username is root and password is blank my server name is local host.
No. PHP is a programming language. MySQL is a database. Install MySQL and type mysql from the command line and you will be connecting to MySQL using mysql.
MySQL docs
If you're writing a desktop application, mysql probably isn't the database you want to use. If you want to store data locally, try something like an embedded sqllite database. If you want to store the data remotely, I STRONGLY recommend to put the database behind an API. That is where something like PHP would come into play. It doesn't have to be PHP though. It can be python, java, ruby, etc.
Whatever you do though, DO NOT talk directly to a remote mysql database from your desktop app. That's just asking to have your db hacked.
MySQL has nothing to do with PHP, except that they are often bundled together. If you need to access MySQL by itself you can download MySql workbench.
http://www.mysql.com/products/workbench/
If you need a driver for your language google 'language + MySql Driver'
I'm trying to access the mssql database of my website which a web design team has designed. They have given me the ip, port, db name, user and password... but how can I connect to the mssql server?
I have tried doing it via php but I think I have to compile php without "--without-mssql" "--without-pdo-mssql"... which I would not rather do on this windows 7 computer unless I have to.
I've tried SQL Server Management Studio Express but I couldn't find a way to access to a REMOTE database.
I've also tried Razor SQL but that did not connect either.
I almost tried something like phpmyadmin for asp.net but wanted to find an easier solution for this- without installing asp.net.
So what would be a good solution for managing a remote mssql database? Is there a program like Office Access that can handle such job?
SQL Server Management studio does support remote connections, in the small dialog you see in the middle of the screen when you run it, specify IP, username and password.
do you get any error? Which error do you get?
I am a fan of Navicat:
http://www.navicat.com/en/products/navicat_sqlserver/sqlserver_detail_win.html
However, I have not used the Sql Server version, but the MySQL and Oracle versions are pretty good - MySQL is awesome (mid range price point is the only draw back).
However Navicat Lite, which is still pretty good (and can handle most server types) is free!
Just a note, has the remote DB been setup for remote connections? If not you will not be able to get access no matter what you use.
What would be a better choice for making a database driven
Adobe AIR(Desktop) application?
Using PHP+MySql with AIR
OR
Using SQLite
If I choose SQLite, then I cannot reuse my code for
an online application.
If I choose 1, I have to block few port numbers on User's machine.
Also, I am using XAMPP for providing the user with PHP and MySql, so
XAMPP opens up a command window as long as it's running. And, users
get confused about what's that window for? It makes the end user
experience slightly confusing.
I'd definitely use SQLite as its included in Air.
May I suggest; write your code in two sections. The UI which uses a JSON feed to populate itself, and the API to provide the JSON data. When it comes to port the application to the web you can use the same UI but with a rewritten API.
Whatever you do, don't open up a command window while the program is running. If you do that, your customers will uninstall like there's no tomorrow.
As far as mysql vs sqlite, the standard approach is - if it communicates remotely, feel free to use mysql, but if you're installing the db on the client, you should use an embedded standalone db (sqlite).
How complex do you expect your app to be that you can't use sqlite (besides not being able to reuse some of the code that you mentioned)?
If XAMPP is too confusing for your client, install Apache and MySQL as standalones. It's essentially the same thing and you'll have more control over what's running in Apache/MySQL. Plus you won't get an annoying command window (though, to be quite honest, I don't recall a window that I couldn't minimize to the tray when I ran XAMMP).
My suggestion is use Sqllite as your local database and writes a synchronization API that will synchronize the local sqllite database with the server side database-MySql. So according to your client you can use the system. If the client is standalone then Sqllite will serve otherwise the MySql will serve. Only thing you have to decide in both this is how to use the synchronization api.
Just check the Sample Application