I am working on project that require storing large data in tables in smartphone within the application. I already searched through google about this topic but did not find anything. so I need to know if android smartphone support database of 700 MB and how the response time would be to retrieve the data.
Android contains an SQLite DBMS within itself. You can create and manipulate databases within your android application with SQLite. You can find tutorials for creating and manipulating SQLite android databases: here
They represent internal dadabases in the phone like the contacts manager application that we find in each phone.
Otherwise you can put your database in a remote server and you can manage it using RESTful web services : here
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I am working on my capstone and I need to create two programs using two different languages that use a single local database. I am making a chore manager that will be a windows program and an android app. I figure out how to use sqlite for the windows app, but I cannot wrap my head around using an existing database with android studio. I need the app to be able to read existing data and display it and then based on some conditions edit the data.
If I add the database as an asset will the data a user changes using the app be usable by another windows program?
Here's my opinion: "Don't use SQLite for this." Use a regular shared database that you can (securely ...) access from both environments.
SQLite databases are files, accessed through the file-system. They are most commonly used where the data won't be shared, because, like any "shared file" database of aeons past, they are always subject to corruption if someone (or the operating system, or the network ...) does anything wrong. Whereas a conventional client/server database doesn't have these problems because it controls the data while it talks to you.
SQLite is a marvelous tool for storing structured information on a device. I've deployed many dozens of "boutique" websites which store their page-information that way. But, I think, it's not the right tool for this job.
I have a website which display quotes grouped by author.
The front end is in asp.net and the database is in sql server 2012.
The table is simple with four fields.
Id numeric and primary key
Author nvarchar
Quote nvarchar
Insertdate datetime.
Now, I want to create a mobile app on both Android and ios platform.
First I started with Android using android studio.
I have the basic design ready with layout.
Now, I am stuck with the main requirements which is I want to give user the options of downloading the quotes when online and the quotes already downloaded should be available offline.
I have been trying multiple tutorial but can't find the one with the exact requirements.
So, is this the below right way of going forward?
I created a webservice and transferring the data using retrofit library. Now I'm able to display the data but not storing it locally. As this part is complete just want to be sure if I have done it the correct way as don't want to rollback once I start working on the part two that is storing the data in sqlite.
Also, can I reuse some of the functionality on ios.
Seems reasonable.
What you probably want to do now is introduce local storage for the data so they don't have to be online and accessing the API all the time. For Android SQLite is the normal way of storing data, and iOS uses Core Data (although SQLite is available).
Everything up to the API is reusable, you'll need to develop the download and storage for each ecosystem separately.
NB - that being said, I believe that Google's Firebase cloud database has an offline mode, so you could potentially work around the need to develop the syncs separately and use Firebase's SDK to get the data into an auto synced local store. Haven't used it myself, but it;s out there.
I want to build an app that targets multiple platforms (Android and iOS) using Xamarin. This app consists of retrieving specific datas from MySQL database, store them in an internal database (using SQLite database for Android for example) and make a screen containing a list of products names to make it simple. Doing this, the device running my app can show the list offline. In addition to that, the client using my app (either Android device or iOS device) when it gets online, should be notified of modifications in the mysql database and update the internal database.
Creating this cross-platform Android and iOS app with Xamarin normally involves creating three types of projects:
A portable class library project that contains the shared code
An Android application project containing the Android specific code
An iOS application project containing the iOS specific code
It's fairly easy to notice that the User Interface is the part that I can't share between Android and iOS. But I find it so difficult to find the part that can be shared between them.
Is it possible to share the logic of
Retrieving datas from MySQL database?
Getting notifications when MySQL database is updated?
Storing datas in an internal storage?
Retrieving datas form the internal storage?
Your shared project can (generally) contain anything that isn't platform or UI specific, like:
data access
domain models
service code
view models
utility code
Also note that if you use Xamarin Forms you can also put your UI code in shared project.
I have an app that stores a sqlite database in the usual place. ie: data/data/com.blah.blah/databases. I wish to remotely locate the SQLITE database and read from and write to it. I wonder if there is a way to do it without using the Oracle Mysql option. Is there a way to just change the default location to a folder on a website. Thanks in advance. If so how do I do it. I cant find any tuts or books that explain how its done.
SQLite isn't a remote database implementation. That is kind-of part-of white it is called SQ*Lite*. :) It is for doing SQL databases based on local files, without taking the big additional overhead of having some remoteable service protocol sitting between you and the database.
There are all kinds of options for interacting with remote data stores, not just MySQL - PostgreSQL, etc. You can use whatever of those you want. You can then have on the device just the client code you need to communicate with the remote data store. It doesn't make sense for Android to supply any complicated/sophisticated here built-in, though, since exactly what you want is going to depend mostly on what you are using on your back-end server.
I am developing an android program for my university. I am confused about which database to use.
What I want is that when the user is connected to the internet the program will check for any updates in the backend database. If there is any, the program will sync it with Android device.
Let's assume that after while the user opens the program in place with no internet, the program will work just fine because the file is already in his mobile.
I chose Access and created .xml file and by the help of this site: XML resources in android. I learnt how to read it.
Actually this program is my senior project. I dont want the judges to ask me why didn't I use MySQL or SQLite.
Which database system should I use? Is Access the right database system to choose?
I want to do a program that looks just like Univ of Kent program.
Parsing XML could take time, also in XML you have no choice but to load the whole file.
SQLite is fast, simple to use and very dynamic.
Android offers a very simple SQLite API. Androoid SQLite API
If you are interested in reading more about all the data storage types in Android visit this link
It depends upon your requirement. lets say you want to build something which handles and stores the data on your device locally then SQLite is a good option (you can use firebase as well).if you want to do some sort of calculation on you data on a remote server then firebase is a best choice .
by using firebase you can store your data generated by your users and then if you want you can carry out some analytics as well.
i would prefer Firebase .