Crowdly
Додати до Chrome
DataBase Fundamentals new
Шукаєте відповіді та рішення тестів для DataBase Fundamentals new? Перегляньте нашу велику колекцію перевірених відповідей для DataBase Fundamentals new в softserve.academy.
Отримайте миттєвий доступ до точних відповідей та детальних пояснень для питань вашого курсу. Наша платформа, створена спільнотою, допомагає студентам досягати успіху!
Assuming that we have 2 tables - customers and orders:
Assuming the following query
select * from customers join orders on orders.customer_id = customers.customer_id;Assuming that we have 2 tables - customers and orders:
Assuming that we have 2 tables - customers and orders:
Which of the following queries is correct to count the customers who have put at least one order?
Assuming that we have 2 tables - customers and orders:
Assume also that we have 2 customers and the first customer has 3 orders and the second customer has 5 orders. How many rows will the following select query bring?
select * from customers join orders on orders.customer_id = customers.customer_id;In MongoDB, data is stored in collections, and each collection contains _____
MongoDB uses a format called BSON, which stands for:
The process of combining data from multiple collections in MongoDB is known as:
In MongoDB, the unique identifier for each document is called:
In MongoDB, a collection is similar to what concept in relational databases?
MongoDB stores data in the form of