Not sure I fully understand what phpmyadmin does.
I created a database in phpmyadmin, and would now like to start accessing the data in it from php. However I have no idea where the database is?
Should I export in the phpmyadmin software? I tried that but it came up with a .sql file which can be opened in notepad and contains the SQL statements used to create the datbase and the one table inside. Basically that doesn't look like a database to me.
phpMyAdmin is just an interface to work with an existing MySQL database server. However you have configured phpMyAdmin to access the MySQL database is the same information you need to access it through PHP. You will need the server name/ip, username and password.
There are many tutorials available online that can help you get started.
phpMyAdmin is an application, written in PHP, to provide a convenient interface to your MySQL database in the browser. It's not needed in anyway to connect to the database server from PHP. To do the latter, you'd typically find the right function names from the PHP documentation and get some examples. Start here, for example: http://www.php.net/manual/en/book.mysql.php (and investigate mysql vs. mysqli vs mysqlnd options).
Your MySQL server will usually run on localhost:3306, but you have probably entered those details while setting up the phpMyAdmin install, anyway.
PHPMyAdmin is only a graphical front-end to the mySQL database.
PHP has built-in functions to access a mySQL database, those are totally separate from phpMyAdmin.
For reference, here is the PDO documentation which is one of several methods to access PHP, and definitely one of the more recommendable ones.
It is recommendable over mySQL because it supports parametrized queries by default, the lack of which made many PHP applications based on the standard mysql_* family of functions vulnerable to SQL injections. That is not to say that it's not possible to program safe scripts with the mysql_ functions, but PDO makes it easier.
The docs are a bit tough to get started with the subject, though. I'd wait, I'm sure someone will link to some good english-language tutorials.
The MySQL server runs on a known port on a given server (EG: localhost), with a given database (EG, it might be called: "myDatabase"). You should be able to configure phpMyAdmin to point to that server, host, and database.
You have to write your own php code to interact with mysql.
phpMyAdmin is a tool to interact with mysql independantly of your own website.
When you EXPORT using phpMyAdmin it is basically taking what is in the database and creating a text file of its contents that you can save for backup. If you want to restore the backup, go into phpmyadmin and paste that text file into SQL and it will put it back.
There are PHP commands to use to retrieve, and store data from your database. I recommend you look at the php website for mysql functions.
There are some good examples there.
Related
I've been running into an issue recently when I attempt any tutorials that involve using a SQL database, entity framework, dapper, etc.
When it comes time to publish a database, or utilize an ORM, I'm given duplicate options for the same localdb under SQL Servers. Furthermore, then I attempt to publish, the database doesn't show up under the localdb that I've chosen.
I'm wondering how I go about removing the other SQL Servers and just having the one available.
If you look at the image below, the Browse option gives me two of the same LocalDbs. Plus I also get a 3rd one under \ProjectModels. I'm wondering what's causing this and how it can be fixed since no matter which one I choose, the sql database I attempt to publish doesn't show up within any of them.
My advice is not to use this method to publish the database. (right click to delete)
Please refer to this official documentation.
File-based databases like SQLite or SQL Server Express are designed to store their data in easily transferable files that can be served with your application/site.
"Copy to Output Directory" Property of the database file to "Copy if newer". Just point the address to it.
If you are using a server-based database like SQL Server, MySQL, etc., you need to make sure that the target machine/environment has the same database server installed, and you need to write a deployment script to append the pre-populated data files to the server. This might be troublesome for you.
You can also refer to these links. 1,2,3
I've never done databases before but I know that you can create them on MySQL, the thing is that I want to be able to write/read a database locally and not have to send/receive any information online as it would be too slow for what I need.
Is there a way to create a stand alone database (possibly on MySQL then downloading it) and write/read from it using LUA?
Thanks for any information, as I say, never touched databases.
Yes it is.
You can download sqlite3, which is a simple SQL relational DB. Basically this type of DB is just a file (.db extension), so you can have it locally on you PC and also exchange it between many machines easily.
From a Lua standpoint, what you need is a library to access your DB and I think LuaSQLIte3 is the best option to go with. Check this SO post for a basic example on this.
IMO using lua in conjunction with sqlite3 is one of the best choices when one wants to have a (light) SQL-based DB locally, without the added "complexity" of a more commercially used DB (e.g.postgres).
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've got a linux server that already connects happily to a MS SQL Server and I want to know if there is a way to dump the whole thing into a format I can read. I don't have access to the desktop, but I can connect using PHP and I can issue whatever commands I want. I have admin access to the SQL Server, so no problem there.
My main goal is to understand how the people before me set this thing up. I already know how to get the stored procedures as text (SELECT * FROM sys.procedures), but I was wondering if there is a way to get the whole database. I'm not very familiar with SQL Server so I don't know what important bits I might be missing.
And I don't care if the solution is in PHP or not. That's just the thing I've got working right now. Any SQL-ish command that dumps the entire database would solve my world.
To summarize:
I don't have access to the actual machine/desktop
I have admin access to the DB using PHP's mssql libs
I'm on linux
I want a text file I can look at that tells me everything in the database
My goal is not to answer a specific question - I'm looking to understand what the people before me did when they set up this database. Unknown unknowns, and all that.
Okay, hopefully I've made sense. I'm sorry if I've been a complete idiot. Be gentle. Thanks!
I would backup (http://msdn.microsoft.com/en-us/library/ms186865.aspx) the database to file and then download it, restore it on Windows and then use SQL Server tools like SQL Server Management Studio etc. to look at it.
There is plenty you can do with the metadata, but you could spend a lot of time writing queries instead of using existing off-the-shelf documentation tools.
You can use this script to create insert statements for any given table.
This stackoverflow question will tell you how to generate create table statements.
SELECT NAME FROM sys.tables will give you a list of table names.
You would probably save a LOT of time and pain by just using native SQL SErver Windows tools that work with it.
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.