What Do You Want from Room When You Create a DAO

question 49

Multiple Choice

What do you want from Room when you create a DAO method and annotate it with @Delete? Example:
@Dao
Interface MyDao {
@Delete
Fun deleteUsers(vararg users: User)
}

• A) Room generates an implementation that inserts all parameters into the database in a single transaction.
• B) Room modifies a set of entities, given as parameters, in the database. It uses a query that matches against the primary key of each entity.
• C) Room removes a set of entities, given as parameters, from the database. It uses the primary keys to find the entities to delete.

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Definitions:

Economies of Scale

Cost advantages a business obtains due to expansion, characteristically causing a decrease in fixed costs per unit of production.

Conglomerate Mergers

Conglomerate mergers involve companies from unrelated business activities or industries merging, often to diversify business operations and risk.

Market Share

The portion of a market controlled by a particular company or product.

Financial Results

The summary outcomes of a company's operations and activities, often presented in terms of income, revenue, profit, and loss.