A data warehouse is a system used for business intelligence (BI) and analytics. It is a central repository of data from one or more sources, which is transformed and loaded into the data warehouse in a consistent format. This allows for easy analysis of the data to support decision-making.
Need for Data Warehouse
There are a number of reasons why organizations need a data warehouse:
- To improve decision-making: Data warehouses provide a single source of truth for data, which can help organizations to make better decisions.
- To increase efficiency and productivity: Data warehouses can help organizations to save time and money by automating data analysis tasks.
- To reduce costs: Data warehouses can help organizations to reduce costs by eliminating the need to store and maintain multiple copies of data.
- To improve customer service: Data warehouses can help organizations to improve customer service by providing insights into customer behavior and preferences.
Benefits of Oracle Data Warehousing
Oracle Data Warehousing offers a number of benefits, including:
- Scalability: Oracle Data Warehousing is scalable to support the needs of even the largest organizations.
- Performance: Oracle Data Warehousing is designed for high performance, so organizations can get the insights they need quickly.
- Security: Oracle Data Warehousing provides robust security features to protect data from unauthorized access.
- Ease of use: Oracle Data Warehousing is easy to use and manage, so organizations can get started quickly.
MCQs and Answers
Q1. What is a data warehouse?
(A) A system used for business intelligence (BI) and analytics. (B) A central repository of data from one or more sources. (C) A system that transforms and loads data into a consistent format. (D) All of the above.
Answer: (D)
Q2. Why do organizations need a data warehouse?
(A) To improve decision-making. (B) To increase efficiency and productivity. (C) To reduce costs. (D) To improve customer service. (E) All of the above.
Answer: (E)
Q3. What are some of the benefits of Oracle Data Warehousing?
(A) Scalability (B) Performance (C) Security (D) Ease of use (E) All of the above
Answer: (E)