Learn how to update data in your SQLite database using Cupboard. Annyce explains how the put method works in the DatabaseCompartment class.
- [Teacher] If you recall,…we can use Cupboard's put method…to insert records into our database.…The same method can be used to update records as well.…In this example, we're creating…a new user record and setting the ID and name,…and then we're updating it with the put method.…So let's say we have the following records…before the update is performed.…Amber, Joe and Gladys.…Then after the put statement is executed,…we would have the following,…Gladys, Joe and Gladys.…
Notice however, that the active field…of record number one has been reset to zero…instead of the one that we had previously.…This is due to how updates are performed in Cupboard.…First, Cupboard checks to see if there's…an existing record with the same ID…as the object passed into the put method.…If not, it inserts a new record.…If so, then it will completely replace…all of the fields.…
We have two options available to us…if we want to avoid a full replace.…First, we can simply retrieve our object from Cupboard,…make our desired changes,…and then put it back.…
To begin, Annyce Davis reviews using the de facto data persistence solution available on Android: SQLite. She takes you through basic SQLite concepts—such as how to create a database wrapper and insert data into a table—as well as a few more advanced topics. Next, she covers working with Cupboard, an open-source project dedicated to simplifying your SQLite interactions. To wrap up, she dives into working with Realm, an object database solution designed with mobile devices in mind. Throughout the course, Annyce discusses establishing relationships between database tables, creating and running queries, as well as performing data migrations.
- Overview of SQLite
- Defining a database table's schema
- Exploring SQLite create table syntax
- Executing create table statements
- Inserting data with a foreign key relation
- Inspecting the database using a terminal
- Updating and deleting records
- Working with Cupboard
- Working with Realm
Skill Level Intermediate
Android App Development: Unit Testingwith James P White2h 59m Intermediate
1. SQLite Basics
2. SQLite Beyond the Basics
3. Working with Cupboard
4. Realm Basics
5. Realm Beyond the Basics
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