多次调用 Room 数据库查询或创建变量更好？

Question

It is something that may seem very new but I have this doubt, I will do it with a simple example:

I have a database with a table that contains, among many other things, a "name" column

When I want to use the name of id 1 many times, what is the best practice?

Option 1: Create a String variable called "name" to make a single query in the database Option 2: Call "name" directly from the database every time it is to be used

I always create a variable to avoid many queries in my database but I don't know if I'm right

String name = appDataBase.tableDao().getName(id);
    textView1.setText(name);
    textView2.setText("Employee: " + name);
    .
    .
    .

Answer 1

1. If you are not modifying the value, it is preferred to Create a String variable called "name" to make a single query in the database
2. If you are modifying it, it is preferred to Call "name" directly from the database every time it is to be used
3. If somebody else can modify the name, and you need to see the latest value, Get it from the database directly

Answer 2

CRUD operations are always "expensive". Usually they involve network call. Avoid as.muchbas possible. Less is better.