Consistent: a transaction must ensure to change the database from one valid state to another.When you commit a transaction, either the entire transaction is applied or not. It means that a change cannot be broken down into smaller ones. Atomic: a transaction should be atomic.SQLite guarantees all the transactions are ACID compliant even if the transaction is interrupted by a program crash, operation system dump, or power failure to the computer. SQLite is a transactional database that all changes and queries are atomic, consistent, isolated, and durable (ACID). The Ionic Storage plugin is a bit easier to use and also works inside our browser but has dropped support for the query() function, so if you really on this function you might need to access your database directly through these plugins.Summary: in this tutorial, we will show you how to use the SQLite transaction to ensure the integrity and reliability of the data. With the right plugins we are able to build an Ionic SQLite app to import SQL data (or even JSON structure) into the SQLite database of a device. That’s all, now you only need to make sure you run this app on a device/simulator as we make use of the underlying SQLite database which is not available inside your browser if you use the preview or lab function! Conclusion Next we need to add everything we installed to our module and load the plugins and stuff, so change your src/app/ to: import We just create one new table and insert some data sets. INSERT INTO developer(name, skill, yearsOfExperience) VALUES ('Max', 'Startup', '5') INSERT INTO developer(name, skill, yearsOfExperience) VALUES ('Jorge', 'Firebase', '2') INSERT INTO developer(name, skill, yearsOfExperience) VALUES ('Simon', 'Ionic', '4') In our case it’s enough to have a SQL dump like the one below, so for testing create a file at src/assets/dummyDump.sql and insert: CREATE TABLE IF NOT EXISTS developer(id INTEGER PRIMARY KEY AUTOINCREMENT,name TEXT,skill TEXT,yearsOfExperience INTEGER) The SQLite Porter plugin would also allow to import JSON data, but here we stick to SQL. You can do this of course with the standard Ionic SQLite wrapper but you would either have to prepare each statement accordingly or split up your SQL dump into the right format, which is sometimes not a good idea. Npm install -save also create a provider for all of our database interaction right here.Īs said before we want to fill our database with some initial values. Ionic cordova plugin add cordova-sqlite-storage Go ahead and run: ionic start devdacticSql blank Additional we add the SQLite Porter plugin as well as the according Ionic Native NPM packages so we can populated our SQL database from e.g. We start with a blank Ionic app and install the Cordova SQLite plugin to access the database. Note: If you have some sort of MySQL database you should still work on a REST API to deliver the data and don’t work directly on the database. In this post we will see how to easily import SQL data into our Ionic app, and how to work with queries to retrieve or modify our stored data! Although the Ionic Storage package is great to store almost any kind of data, many of the readers wrote they are using MySQL on the backend side and need some more equivalent storage inside their Ionic app so we’ll go for an Ionic SQLite App today.
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