Huawei H14-231_V1.0 Practice Test - Questions Answers, Page 69
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When a developer develops an application based on HarmonyOS, the data used by a developer can be decomposed into multiple objects. The developer needs to add, delete, modify, and check the teaching data, but does not want to write overly complex SQL statements. In this scenario, the developer can use an object-relational mapping database to process the data.
In HarmonyOS, both relational databases and object-relational mapping databases can use SQL statements to manipulate databases.
Intent is a carrier for transmitting information between objects.
When MainAbility and MainAbiitySlice are bound together, the lifecycles of the two are synchronized, including the callback method for transitioning between states.
The callback mechanism provided by the Ability class can enable the Page instance to switch in the background following the user's operation.
Operations such as the display and update of the UI interface are carried out on the main thread, so the main thread is also called the UI thread.
When a developer starts a music player on a remote device, he or she may not fill in the Deviceld of the remote device.
If a developer sets a distributed tag Intent.FLAG_ABILITTSLICE_MULTI_DEVICE in the Intent, what does the tag mean?
HarmonyOS is a distributed operating system that can be deployed on mobile phones and embedded devices.
What problems do developers need to think about each basic element when building page layouts in JavaScript UI frameworks?
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