Question
Which of the following best describes the primary
purpose of a data warehouse in analytics?Solution
A data warehouse is a specialized system used for storing and managing large amounts of structured data that is used for analysis and reporting. The primary purpose of a data warehouse is to integrate data from multiple sources and provide a centralized repository that can be queried for decision-making. Data from various operational systems is extracted, transformed, and loaded (ETL) into the data warehouse, where it is stored in a format optimized for querying and reporting. This makes it a valuable resource for business intelligence and analytics. β’ Why this is correct: The key purpose of a data warehouse is to facilitate analysis and decision-making by providing a centralized, integrated data repository. This helps organizations make data-driven decisions based on historical trends and patterns. ________________________________________ Why Other Options Are Incorrect: 1. To store raw, unprocessed data: Data warehouses store processed data that has been transformed to be useful for analysis, not raw, unprocessed data. 2. To store transactional data for real-time business operations: Data warehouses store historical data for analysis rather than real-time transactional data. Operational systems are typically used for real-time processing. 3. To manage the flow of data between multiple databases in real-time: This is the role of a data integration tool or data pipeline, not a data warehouse. 4. To optimize and store machine learning models: Machine learning models are typically stored in model management systems, not in a data warehouse.
What value should come in place of (?) in the given expression.
450 Γ· 9 + 75% of 160 β 64 Γ· 4 = ?
2/5 of 3/4 of 7/9 of 14400 = ?
7/3 of 4/5 of 15/56 of ? = 83
[564 + 32 of 18 Γ 9 Γ· 12 + 162 ] Γ· 4 = ?
What should come in place of (?) question mark in the given expression.
Β (25% of 320) + (3/8 of 400) β 30 = ?
45% of 360 - 160 + ? = β324
187 ÷ 5 ÷ 0.4 = ? – 24 × 2.4
Find the simplified value of the following expression:
[{12 + (13 Γ 4 Γ· 2 Γ· 2) Γ 5 β 8} + 13 of 8]
18 Γ 15 + 86 β 58 =? + 38
Β
√(24²+285-8²-172) = ?²