I created an air application that include some data like videos, mp3s, pngs, ect... I look for a way to hide or password protect my data folders after the application is installed. So the user can't see my assets (videos, mp3s, etc...) is it possible with both pc and mac ? thank you for your answer
I would try to put binary data to SQLite database or load data from external server. You may also change some bytes within the files (so they become unreadable), and fix them once they are loaded to the application.
Additionally on Mac your assets will be stored within application.app package and most of users won't find them (only those who will dig into the package).
Related
I am new to using StackOverflow and I don't know how to properly ask this question also this is my first time using swift and some external database server.
I am creating an ios app using Xcode and I'm attempting to create an inventory to store items (300 - 1000 items) such as milk, eggs, bread etc and will have to store the product image as well as the product details such as weight, price, ingredients etc.
But I have no idea as to what to use I was thinking mysql but after doing some research I've found its best not to use blob. I've already used MySQL for the login page into the app so I assumed it was easier to use mysql for the product database as well.
The idea is the user creates an account, logs in then can view products in my made up store. I wanted to use an external database so I can give the app to friends and they can use it by downloading from the app store when it's finished.
Can you save the bytes of a large file in a database? Yes. Should you? No.
Generally speaking the proper way to handle files in a database is to store the URL of the file, not the file itself.
If the images you're using are available online and you are only need to view them, you only need to save the URL itself. There are libraries that can handle all the downloading and cacheing quite easily once you have the URLs.
If you still need to have the images locally, Save them to disk and store those local File URLs in your database.
I need to develop a very simple database (probably no more than 4-5 tables, with up to 50 records per table) for my company, with the following requirements:
The database itself (most likely an Access file) must be stored on a server and accessed through http://www.something.com/my_db.mdb
Users from 6 different countries (with generally low Internet bandwidth) must be able to access this database and to view / edit it through a few masks, as well as produce automatic reports / extracts
The whole solution must be as robust and as low-tech as possible, to reduce maintenance issues (ideally, no development at all)
I cannot pay an Access license for each user, and using OpenOffie or LibreOffice is not an option (because I cannot go and install it on the computers of all the users)
My first (and naive?) idea was to:
1) Create the mdb file containing only the data and store it on a webserver
2) Create the edition masks and the automatic reports in another file that would define the online file as data source
3) Deploy the file containing the edition masks to the computers of all users
4) The users only have to open their local file to edit the distant DB through ther edition masks
Is my approach somehow realistic? Do you see another approach that would make more sense? Can I implement my solution with 1 single Access license?
Thanks a lot in advance for your inputs and insights!
If you provide just the mdb file as file source, accessible via HTTP, the users won't be able to connect to the database, because in a HTTP GET file download they just get the .mdb file downloaded to their local computer. When they edit something within the database (e.g. add a record), it will be done just locally on their local copy of the file.
If you want to use a access database, the simplest approach I have is that you implement a very small web application (e.g. ASP.NET) which connects to the .mdb file (and the .mdb file then can be in a private directory on the server). Your web application then is deployed to Internet Information Server (Microsoft IIS as a webserver).
You can provide data forms as web application, which you implement using ASP.NET, or develop separate clients which access web services you develop with .NET.
You could try cloud based solutions like; Google Firebase
For a requirement of this type; one should not use Access tables which are static because Access is a front end database but instead use a back end database such as SQL Server Express. SSE is free and one is better positioned to provide real web based features if needed in the long run.
Further I would say, in terms of cost/management - one should really consider using one of the online db services such as soho, knack, airtable, etc. One of these could well be faster and less expensive than creating a web app from scratch for such a small requirement.
I am busy building an application that stores images of users in a filesystem,which can then be accessed by the database.
As the images should be confidential, is there a way to encrypt the filesystem and be able to link to the images from the database?
I am using PHP, MySQL, Apache, Windows.
Thank you for your time!
This is not a MySQL problem. You should store file references in your MySQL tables and handle the file encryption yourself. IOW, your app should encrypt and decrypt the images at the application level and only these encrypted files should be moved around and stored. Only the app can then display the contents of an image file. No plain readable form of the image appears anywhere else.
I want to know which ways I can use to distribute an Access Database.
I'm developing an Access database split for distribute to many customers but I want to do something similar to an .exe file.
One file that contains:
Front-end
Database
Pictures
References
Templates
...
And other things.
I want one file that executes some instructions before opening my application, actions like: Create a folder in My Documents and copying files there,
check serial number of hard drive and continue if its authorized or stop it if not authorized, links FE and DB, encrypt database. (I have this coding in vba).
Can you help me?
You need a program that creates an installer (or setup program). Inno Setup is the first that comes to mind.
It even has its own SO tag. :)
Your setup must first check if Access (in a suitable version) is installed, and if not, install the Access Runtime.
I have a flash application which runs on web. I need to store images and audio files onto the clients local disk(don't want to store on web) without prompting the client. I have already tried with shared object. But since shared object space is limited to 100 KB per domain I am searching for alternatives.
If someone has better solutions please let me know.
Thanks.
You can't do this with the Flash Player by itself. SharedObject and FileReference/save() are intentionally designed to allow the user to have authority over local storage. It would be a security concern if users did not.
Using an AIR application, though, you can do this using File and FileStream, or EncryptedLocalStore.
I had the same problem with creating log files and writing to them
The only solution for me was to create a localhost WebService (used WCF), so i could use URLRequest to the localhost and pass data to service - which then updated file or created it.
But in your way, if you want to store things from the user to your disk, maybe you could also somehow play with the Web services. Just need to try.
Visual studio has almost complete Web service template - just edit for your purposes.