Data Warehousing Process

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What is a major drawback of having independent data marts?

Data redundancy
Scalability issues
Data latency
Inconsistent data definitions (correct)

What is a key benefit of the data mart bus architecture?

Enhanced scalability
Improved data redundancy
Better data latency
Maintaining data consistency across the enterprise (correct)

What is a characteristic of the hub-and-spoke architecture?

Centralized data warehouse (correct)
No dependent data marts
No customization of user interfaces
Decentralized data warehouse

What is a potential issue with the hub-and-spoke architecture?

Lack of holistic enterprise view (A) Signup and view all the answers

What is a key advantage of the hub-and-spoke architecture?

Easy customization of user interfaces (D) Signup and view all the answers

What is a characteristic of independent data marts?

Inconsistent data definitions (A) Signup and view all the answers

What is the primary purpose of ETL software in a data warehouse framework?

To transform and cleanse data from various sources (C) Signup and view all the answers

Which of the following is NOT a source of data for a data warehouse?

Data mart (C) Signup and view all the answers

What is the purpose of metadata in a data warehouse?

To support data summarization and indexing (A) Signup and view all the answers

Which of the following is a benefit of using middleware tools in a data warehouse framework?

Simplified access to the data warehouse for power users (B) Signup and view all the answers

What is the primary function of a data mart?

To provide summarized and detailed information for a specific business need (D) Signup and view all the answers

Which of the following is a characteristic of a data warehouse?

Integrates data from multiple sources (A) Signup and view all the answers

What is the relationship between a data warehouse and a data mart?

A data mart is a subset of a data warehouse (C) Signup and view all the answers

What is the purpose of a staging area in a data warehouse framework?

To transform and cleanse data from various sources (C) Signup and view all the answers

What is the primary advantage of using a dependent data mart?

It provides a consistent data model and quality data (B) Signup and view all the answers

What is the main difference between a dependent data mart and an independent data mart?

The source of the data (C) Signup and view all the answers

What is the primary purpose of an operational data store (ODS)?

To provide a consolidated view of volatile data (D) Signup and view all the answers

What is similar to short-term memory in a data warehousing environment?

An operational data store (ODS) (D) Signup and view all the answers

What is the primary characteristic of an oper mart?

It is used for multidimensional analysis of operational data (A) Signup and view all the answers

What is the relationship between an operational data store (ODS) and an oper mart?

An ODS is the source of data for an oper mart (D) Signup and view all the answers

What is the primary difference between the data stored in a data warehouse and an operational data store (ODS)?

The frequency of data updates (A) Signup and view all the answers

What is the purpose of the ETL (Extract, Transform, and Load) process in an operational data store (ODS)?

To consolidate data from multiple source systems (A) Signup and view all the answers