Question
How much did China invest in the world's largest
hydropower dam on the Brahmaputra River?Solution
China has approved the construction of the world’s largest hydropower dam on the Brahmaputra River, with an estimated cost of $137 billion, producing 300 billion kilowatt-hours of electricity annually.
What is meant by 'cardinality' in data modeling?
Which of the following best defines the concept of the "Internet of Things" (IoT)?
In a star schema, what is the main advantage of using surrogate keys in fact tables?
In the context of a relational database, which of the following is NOT a characteristic of a candidate key ?
A star schema in a data warehouse consists of:
Which SQL query will correctly calculate the average salary of employees in each department and group them by department in a table named 'employees'?
In a data cube, what does "slice" operation do?
Which schema in data warehousing uses a central fact table connected to dimension tables?
Which of the following is a real-time data warehouse application?
A Fact Constellation Schema is also called:
