LocalStorage vs Sqlite database - android

I have a hybrid application which runs on Android and ios platform, I have been using "localStorage" as data storage.
I also heard sqlite as well, Is there any other local database that I can use for mobile storage?
I would like to know prop and cons in these technologies.
I would really appreciate if anyone can clarify about these technologies.

You can manage data or storage in Android by following ways,
Shared Preferences
Internal Storage
External Storage
SQLite Databases
Network Connection
You can manage the storage or data in iOS by following ways,
Property lists
SQLite database
Core Data
As you say that you have a hybrid application which is for Android and ios you should use SQLite database, because
It is light weight
Comfortable with both Android and iOS [ Cross platform ]
capacity to Handle huge data
The handling of code, manipulating the code is much easy with sqlite.
So, its my opinion to u that you should use SQLite as an database for hybrid application, it will be easy for you. If you are doing application only for iOS then core date can be another good option since you doing both one SQLite is best.

As far as we consider speed and performance , SQLITE is best according to docs.
but you can use xml data storage as well but you will find a little bit slow than sqlite.

Your options are limited. Shared Preferences, local storage, sqlite and network are your only options.
Everything you need to know about your options can be found at the official Storeage Options docs.
I recommend that if you only need to save user options and states and not lots of data then you only need to use Shared Preferences. You can even save JSON in the shared preferences if you don't want to setup a sqlite database.
And remember a user can wipe app data from the app settings, if your worried about the data being wiped then the only option is network or a combination with network.

Related

When I use a sqlite database as an asset can the database still be used/viewed by another program?

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.

What is best way to store large data in local for iOS/Android

I'm working on an app and I have tried to use local storage but I'm not sure if it will be OK for my project.
I need to store really large data every second in my local database, and at the end of the day send to my server. This can be large data because every second write my GPS coordinates.
What is best: SQLite, local storage or websql?
I work using cordova.
I appreciate for your help.
Regards
I am an Android developer so this is how it works in Android :
Shared Preferences - simple key/value pairs specific to your application. This is probably the closest to WebStorage - only for small amount of data.
Internal Storage - read/write files(only the app can access it)
External Storage - SD card file storage(app + other apps including the user) can access it).
Databases (SQLite) - better for large amounts of structured data
Network - obviously, you can store/retrieve data remotely if needed (like Firebase).
What would I choose? if data is structured then I would choose SQLite.
More detailed information :
https://developer.android.com/training/data-storage
cordova-sqlite-storage is Native SQLite component with API based.
It will easily handle large data and easy for CRUD operation.
Yes you can use cordova-sqlite-storage for large data inputs. But I think it is also advisable not to stress your device with so much data in it because mobile is just mobile with so many limitations in terms of hardware. Maybe you can just set a treshold of data size and after reaching it, send it to your server then clear your database.
The point is don't stress you device, use minimum data as much as possible to provide a clean app for the users.

android offline mode - LRU cache or Realm database

I am working on an android project where I need to save my json files to implement offline mode.
According to my research I can use LRu cache or Realm database
Still confused which one to use or is there a better way to implement offline mode for mob app ?
caching your data might not be the best option to go for in this case, i think using database will be the best option,
you can use realm database or best yet room database you can follow the benchmark test for Android persistence libraries here Android-ORM-benchmark
and read more from android developer page https://developer.android.com/reference/android/arch/persistence/room/RoomDatabase
I am not sure if you mean by LRU cache, the class in Android or generally the technique of evicting least used items.
Anyway, you are comparing very two different things here.
I will assume that when you mention offline mode, you need your data to survive you app's process being killed for any reason.
So you users would come back to your application in a day or two, and the persisted data would still be there.
For offline persistence you have multiple options
SharedPreferences (might not be best idea for cache)
Files either on internal or external storage, might be faster than implementing a database if your data is not huge
SQLite database
If you have lots of data and need some CRUD operations, DB is probably the way to go, there are lots of ORMs on Android, Realms is certainly one of them, but to name a few more.
OrmLite
GreenDAO
Realm
Room (made by Android team)
There are also many more, just Google "Android ORMs"
Hope that helps!

Android SQLite Storage usage

Im using SQLite Storage in my healthcare application.I have some idea of why we are going for local storage
No need of internet connection.
individual Data.
Fast to load.
if we want can take a dump of db in server and can be retrieved.
But, I got some opposite question like
suppose if i lost my phone there is chance to get my personal data from the memory of the device.
kindly help me
You can encrypt the data from SQLite. Either encrypt it on runtime using a custom encryption algorithm, or you can use some APIs for that. The most popular seems to be SQLCipher for Android.

Storage of Static data within android app

I am currently developing a simple info app on various university campuses. I want the app to operate predominantly in an offline state thus I want to store all my information locally. The data within the app will not be subject to any change thus I was wondering what the best (practice) method was to store such data? Basically should I be storing the info in a SQLite db, java file or xml?
The answer depends on your requirements, but because of the built-in integration with SQLite, the easiest will probably be to just use SQLite, plus you get the benefits of a relational database. You can refer to the Notepad tutorial for a start.
It depends on the data you have. If it is largely text I would store it in an android string resource file. If it is somehow structured and has IDs and relations store it in a database.
We had a University project requiring a local database on an android phone. What whe did was to use SQLite to write on a database stored on the memory stick. (We couldn't find the right permissions to write directly on the file system)
Check the API website for the android.database.sqlite package first.
And here for a nice tutorial :
http://www.devx.com/wireless/Article/40842

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