I am new in iPhone, I am trying to make an application in which there is need of database for record.
I do not know how to implement it. Is there any one to help me.
You can use core data
Check this Tutorial
Related
I want to fetch data from JSON and store it automatically to sqlite whatever updated on server automatically updates to database whenever program runs.
Can anyone help me out in it. And if my question is not sufficient to answer please ask anything required.
Thanks in advance.
I would look into the RestKit framework. It takes care of the low-level API calls, object mapping, SQLite persistence, etc. It's well documented and maintained.
You can start here http://www.raywenderlich.com/5492/working-with-json-in-ios-5
After reading this, you can user this Class, https://github.com/AFNetworking/AFNetworking. It's easy and usefull!
Download JSON data with AFNetworking and decode with JSONKit, then you can save to SQLite with this wrapper FMDB.
If your supporting iOS 5+ then JSON is added for you by default and can use it using the method given here and after getting the dictionary of objects , you can follow the normal procedure of adding them to sqlite or use core data as said by #Paras Joshi.
I have understood the basic concepts of core data and how to create schemas or data model in xcode. However I am struggling to create database and import it xcode.
I don't have any experience with creating databases before.
Can somebody guide me here.
Thanks in advance!
If your application is document based, the database is the document. You create it in code when you create the document.
If it's not document based and will use just one single database, then you generally create it in code the first time the application is run (or, more likely, whenever the application is started and it cannot find an already existing database).
In either case if the database can start empty, that's all you need. If an empty database would be invalid and you do need some minimal data when you initialize it, you will have to populate it upon creation.
Depending on how much data your minimal database needs to have you can either hardcode the initialization or use a static resource (that is, a file) in your application bundle containing the initialization data in some form that you know how to read and use that to populate the database.
Using SqlLite is more attractive to me as I import the database without any modifications to the android version.
And I made some generic class to handle any database for android and iPhone but I cannot share it here.
Class DBWRAPPER
{
initDB();
ExecuteScalar()
ExecuteDicionary();
Close();
}
To follow-up on the AnalogFile answer, in case your application is not document base, you probably want to use core data with a preexisting SQLite DB. You could feed your DB with a scripting language like Python. e.g. I think it is a better approach than populating your DB programmatically in XCode. Check this tutorial for more info about this approach.
I have built an android app and now its time to built an IOS app. I am very new to IOS App development. I managed to done all the UI design parts and i am coding the backend part. In my application i am using Sqlite database and has many View Controllers each View talks to database. So i would like to have one Class(Java) which take care about the creating,inserting,deleting etc. If i need to get data from database then i have to call that class to access the database. Is there any way to do like this.
Or
I would like to know how to create sqlite database in a efficient way. Because my app fully based on database.
Thanks for your help guys.
There are two main ways to create a database:
Use CoreData. In this case you should read manuals on CoreData, it is pretty complicated. But if you plan to use iCloud in future, I recommend you to use CoreData.
Create db manually and not use CoreData.
The most efficient way in second case is to use a database manager for SQLite. For example, SQLite manager extension for Firefox.
There are more programs for this, but this is free one, that I use myself.
To work with database use FMDB wrapper over SQLite.
Nice tutorial for second approach.
I already have an app in the app store. I want to do an upgrade. My local data store has changed, with an extra table, and with a few fields added in the existing table. I want to retain the data in the old tables. How would I go about doing that? Could someone point me to tutorials that handle that kind of change?
Assuming you're using SQLite: Use a new database with a different name for your update. On startup, check for the table with the old name, copy the data you want, and delete it when you're done.
CoreData has it's own update data which may or may not work for you. You should look into how to change the data model.
Check out Apple's docs on migrating a core data instance. They make it super easy for 90% of the cases. The basic idea, is you break you xdatamodel into versions, so it has a path for migration
Here's a tutorial that might help you Core Data Migration
I am working on a new project where i want to setup the database and access the values whenever i want.So i don't know how to start this.what library should be used for this.Can any one help me...
Thanks,
Anish
Core Data can be a good way to get some abstraction: http://www.raywenderlich.com/934/core-data-tutorial-getting-started
Or, go with SQLite: http://dblog.com.au/iphone-development-tutorials/iphone-sdk-tutorial-reading-data-from-a-sqlite-database/
Highly recommend to use Core Data. You can use SQLIte as the store for your Core Data application. Please refer the apple docs here.
You can use SQLite Manager an Add On of firefox. To See the SQLite Store created by Core Data.