I am developing the app that storing data in the Database in Windows phone8 using SqlLite. The data is inserted successfully. But when I go and saw from Mozila->SQL Lite Manager, the data is not shown. Is it possible to read the data?
It is not yet possible to read data from Mozila->SQLite Manager in WP8. If you want to see what data is stored in your database, execute a query in app. For more information follow Here
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Will you Please help me in one more important thing??? I need to store dashboard's data in a database.. according to my study thingsboard supports 3 database at the moment. NoSQL, Mysql and Hybrid (Psql+cassandra) so i have researched a lot but could not find any way to send my telemetry data to any database. I know it is possible because the thingsboard doc itself say so... but how do i do that?? I checked Psql database thingsboard that i created during installation but there are those relations are present that was made by default. i need to store my project's data in databases just like in AWS we store IoT core's data in Dynamo DB or in IoT analytics. Thingsboard do not provide any node related to DB in his rule engine?? so How do i make a rule chain to transfer my projects data in any Database server. i have installed pgadmin4 to Graphically see the database but nothing useful found. Documentation and stakoverflow geeks said that configuring Thingsboard.yml file located in monolithic installation on linux (/etc/thingsboard/conf/thingsboard.conf ) in this path it have cassandra,mysql,postgres configuration but how to properly configure it??? i tried to access the default database of postgres named thingsboard that i created on installing time but when i list the content of database it only shows the default things/relations of thingsboard if i create a device on thingsboard that is not showing in database why?? I really can use your help. Please enlighten me a way to connect my THINGSBOARD with a DATABASE.
see in my attached images there are everything default, nothing that i create on thingsboard.
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That's wrong, ThingsBoard currently supports 3 database setups: Postgres only, Hybrid Postgres + Cassandra (only telemetries) & Postgres + Timescale. So there is no MySQL database used anywhere.
https://thingsboard.io/docs/user-guide/install/ubuntu/#step-3-configure-thingsboard-database
Find guides for connecting your devices to Thingsboard here, e.g. via MQTT:
https://thingsboard.io/docs/reference/mqtt-api/
If you would like to forward the stored telemetries of ThingsBoard to different databases, this is not possible directly with rulechains (there's only one node to store data in a cassandra table)
One way to achieve this, would be fetching the data with an external microservice/program via HTTP API and persisting the data in the database of your choice. You could use a python script for example.
https://thingsboard.io/docs/reference/rest-api/
Alternatively, you can send the data to a Message queue like Kafka instead of fetching via HTTP API. But still it would require additional tools for storing the data in external databases outside ThingsBoard.
I have a large 180k row SQL (mysql) database that I want to use in CoreData. Can I create the SQLite database using Xcode, then use an SQLight client app to connect to that database, and fill it using my mysql data?
Or is there a better way to efficiently import a large data set to a CoreData store?
It will only be filled once and the data should reside on-device.
The reason I want to do this is because I am building an iOS app that needs to read from a persistent store containing most words in the English language. Along with the word, each row will contain a few other things. The app will never need to write to the database, just read from it, but it will need to read from it very quickly.
From Apple's docs it appears this is not recommended (or maybe impossible): "do not manipulate an existing Core Data-created SQLite store using the native SQLite API"
Update:
Another option that I am currently working on is to export the MySQL database to json using phpmyadmin (or another tool). Then load that json file in to the project. When the app loads (hopefully just the first time it is used), push the data from the json file in to Core Data.
You could reverse-engineer Core Data and produce a Core Data sqlite file directly if you really wanted to, but as you quoted from Apple docs this is not a good idea.
It would be easier to simply write a little macOS command-line tool which includes the same Core Data data model as your iOS app. This tool would read your MySQL database and write it to a Core Data SQLite file, which you would then ship with your iOS app.
For my Windows phone project (it's a Universal app), I have a set up that has a country and a phone number in one of the page. There are about 7 other pages that requests the user for additional information. But for starters, let's just stick with the first one, that asks for the country and the phone number.
I read through a million posts in Stackoverflow and other websites alike, to know what database system is best to implement with the sort of app I am going to be developing, or hoping to develop.
Here're my findings:
Azure SQL: I have an Azure account and I can use the Azure SQL service to store the user-input data directly to the database (when the app goes live), or while in the testing phase. But I got to know that feature isn't really working well as windows phone cannot readily update the data to Azure SQL, on realtime basis. Is it so?
MySQL: I thought I'd create a local MySQL database, for testing purposes, so as I input the data (in the emulator perhaps), the database saves it. I am unsure how I can implement this. I can't find any article I can read that can help me with this. There are with ASP.net, but it isn't what I am going to be using.
SQLite: I know for a fact the data can be stored locally, by using SQLite, but I could like to know if the locally stored data can be later updated on a server-side machine (i'd prefer Azure SQL, but MySQL is also OK with me). If it can be, i wouldn't mind settling with it. If it can't, what can I do?
It all boils down to this: What's the easiest way to store data entered in a textbox (lol, yeah!) to a database (locally or server-side)?
Your efforts to help me will be greatly appreciated!
Thanks!
You can stay on Azure SQL if you have an account.
It works fine and it updates database on the go (sends json as far as I remember), so you shouldn't worry about data being stored in a cloud. Moreover, it is super-easy to use it for your needs (store data from textbox).
Azure SQL will get your bootstrap the fastest for your application. There is no need to deploy MySQL or SQLite and managing your DB. There should not be any concern about updating the DB live from the app.
Basically I need to connect a MySql database to an IOS application and save a local copy to the device but i'm confused about which path I should take to do this.
Here is a basic description of the application:
The application is used to replace multiple paper based forms, allowing the user to complete a desired form on an iPad. Once the user has completed the form, the forms data is uploaded to a server.
Some forms have fields where the user is required to 'select' an option (drop down list). These options need to be pulled from a database because the options will be changed regularly.
The application still needs to work if there is no internet connection!
This means that whenever there is a connection the application needs to save a copy of the current database so that any required information to fill out forms is still available even if there is no connection.
In short my question is: What is my best option to save a local copy of a database (or just a few tables) to an IOS application?
You should look into Core Data. If you're trying to keep an updated copy of a couple tables, I would create a Core Data database that contains the information you need for your app and, every time the user uses your app, check to see if there's an internet connection. If there is, use NSURLSession to download the necessary data from the web server, after which you can compare the downloaded data to that which is in your Core Data database. If there are any discrepancies between the two, you can update your Core Data database as needed. This way you will always have a relatively up-to-date copy of your MySQL database.
This is a good tutorial for getting a feel for NSURLSession in case you haven't used it much.
Hope it helps!
I am trying to build a chat app and I want to manage the user's contact list.Can anyone tell me what is the correct way of storing Contact information(username,alias) in Windows Store app?
In my other app(already published in Windows Phone store),I have used SQLite as database backend for storing such data but I read somewhere that SQLite is not recommended for Window Store apps. What do you use for storing such data?
There is no harm in using SQLite in windows phone store apps and also it is recommended because of its fast data retrieval/save operations as indexes can be applied on the column.
other option for storing data in windows phone app is JSON(using json.net or other libraries). The drawback of using Json files is that it will be slow in large data as all the jason file will be loaded in memory and even if you need only one record from a large data set.
In your case I will recommend SQLite as the contacts will be more with other relational data link phone and address etc. You can easily use joins to retrieve relation data from SQLite tables.