I need to write app which will be to testing some data (some text and picture - about 500MB). But I want stored the data in database somewhere online (because I want to update it sometime and let application download whole package again)
I found Parse.com to store result, but I didnt find a way to store "the first seed" (big database). I need something like Google Translator (it is donwload some dictionary to use ofline and I trust that it is some kind of database too). Any idea?
Maybe the approach is wrong totally and there is a service which will be hold the data and the application synchronize his state ( internal database ) over internet. I really found nothing ... Thank everyone in advance.
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I am currently developing a program in Java using NetBeans that manages expenses. In this program I used MySQL to store data. Now I want to ask that if I give the program to one of my friend, he would also have to install MySQL using the same password that I used. Is there a way in which he will not be required to install MySQL?
Now suppose if my friend already has MySQL, but with a different password. My program would not work in that case, and it would be hard to replace my password with his password in the code. Is there a way to make the program run on his PC?
Earlier once, I have used an Oxford dictionary program. That time I did not have Microsoft Access installed. When I installed Microsoft Access I came to know that all the words of the dictionary are stored in a Microsoft Access file. How can I do this? I.e. how can I use MySQL/Microsoft Access to store data without the need to install either of them?
You can use an in-memory database like H2 Database if you don't require a large amount of data
But I think you should make your db connection configurable by using a properties file
If you want everyone to be able to use the database, you need to run it on a server that people can access through the internet.
However if you don't care about them using the same database and just want them to use their own, you could for example create a small file named "config.ini" or something like that and put the login information (like the password) in there.
Then just read it in your code and use the info you read to log into your database.
That way, every new user will only have to change the config.ini file without ever having to touch the code.
The best solution in my opinion would be SQLite as it is light, and data can be stored locally in a desired location in a single file. H2 is more likely to be a developer tool.
This solution does not require additional software to be present on the user machine. Of course it has its limits, but as a simply storage for program dynamic data it is a good solution. It is worth mentioning that Android applications also can store their data in LiteSQL. It is a bit different approach there, but the principle stays the same.
I'm hoping this will be a fairly basic question. I've been playing around with android development in the last couple days and I'm still missing some of the simple things.
I'm working on an app which needs to convert between currencies. I know that I can get recent data with queries like this.
I want to be able to save this information and allow it to be updated on request. I feel like the natural way to do this would be using an android resource file. It would be ideal if someone could (as explicitly as possible) explain how I could make the query, save it to a resource file, and then read the conversion rates from the resource file in the future.
I understand I could just make the request live each time the data is needed but I'd prefer to have something saved (so the rates can be used offline).
Thanks in advance all.
UPDATE:
Though Vulovic's answer is correct, and I intend to use this approach in the future. For now I have found it is simple to implement the SharedPreference class to store Currency:Rate data.
Ok, you need to create SQLite database. Here is a good tutorial: http://www.tutorialspoint.com/android/android_sqlite_database.htm
I'm a beginner in Android development. I'm trying to make an app where you search for name and show the matching results (from a database) in a listview. Since there's a lot of data, I thought it would be best to write a database without using the SQLiteOpenHandler. So now that I have my .db file, I need a way to be able to use it in my app from the assets folder and also to be able to search through it.
I found to links which I thought could be useful.
http://www.reigndesign.com/blog/using-your-own-sqlite-database-in-android-applications/
This shows how to use an existing database.
http://developer.android.com/training/search/search.html
And this is Google's information on storing and searching data. I need to know is it possible to somehow combine these two methods together to achieve what I'm looking for?
You can use this extended SQLiteOpenHelper. It helps to copy the db file from assets folder in your application.
I'm trying to work on an app which uses GTFS. This may seems like a stupid question but I couldn't find any answer to it.
The GTFS for Israel, a rather small country with not so many buses infrastructure, is around 120 MB zipped file.
Right now the only possible way I could think of for getting it working is to download the file, but downloading 120 MB using the phone could take quite a long time. Sure you can do this only once and save it in a database on the phone, but it still requires downloading 120 MB.
Since it is zipped, I can't unzip it over the server and than just get the txt files..
So basically I'm asking, How can I get the information to the phone, without downloading the zipped file?
I've seen and used apps which uses that same GTFS file, and they load up really fast, even on the first load..
I hope you understand my issue, not sure how to explain it better.
Thanks!
P.s I would make an iPhone app too, and it's the same issue, hence the iPhone tag
One approach might be to preprocess the GTFS data during your app development. You could load it into a SQLite database, and use Core Data to get the data you need out of the file at runtime. This also gives you an opportunity to include only the data that you actually need for your app - it doesn't make sense to ask users to download extra data that they won't need.
Use protocol binary format (pbf) formely google and now open source. It is compact and very fast searchable, so no need to decompress it on a device and load it into a database on that device because pbf acts as a database. Just include pbf library in your code to query it. Of course you have to compress it once before distributing the data online.
I am collecting data from a website and trying to save it to a database (or something similar that is very accessible) rather than having a heap of files on my desktop or in a folder.
There are many pages that I need to look at (1900 to be exact). I want to save time in getting this data, and decided to make a Java program to do this.
This is basically what I am trying to do.
Visit the webpage: www.TestWebsite.com/items/0
Save the (Name, Description, Image(png)) into one array/class to a Database.
Repeat until I get up to: www.TestWebsite.com/items/1899
I want to be able to access this data offline without having to need to go online to view it.
Any ideas on how I should start. I have made a basic webpage viewer, I am just missing the step in between saving the strings and images to a database.
I appreciate any help!
Actually just did this the other day. I used jsoup to scrap the webpages I needed and wrote to my local database. awesomely easy framework for webpage parsing.
It's fairly straightforward, but you'll need to learn a little SQL if you haven't already.
You'll also have to pick a database platform - I'd suggest SQLite for such a purpose, since the data is for personal use and it's lightweight and easy to set up.
Here's a tutorial on using JDBC (Java Database Connectivity) to talk with a SQLite database: http://en.wikibooks.org/wiki/Java_JDBC_using_SQLite. It goes from setup to inserting data, so once you've completed that it should be straightforward to modify your webpage viewing code to grab the data you need and shove it into the DB.
Good luck!