An enormous collection of data on various topics from a variety of internal and external sources, compiled by a firm for its own use or for use by its clients, is called :
Data warehouse
Examining Data Collection Concepts in Business
The question asks for the term that describes an enormous collection of data from various internal and external sources, compiled by a firm for its use or its clients.
Let's look at the options provided and understand what each term means:
| Term | Meaning | Fits the Description? |
|---|---|---|
| Data-base | A structured collection of data. While essential, this is a general term and doesn't specifically imply the vast, integrated collection from multiple diverse sources described. | No, too general. |
| Data warehouse | A central repository of integrated data from one or more disparate sources. It stores current and historical data in one place, designed for reporting and analysis (business intelligence). This perfectly matches the description of an enormous collection compiled from various internal and external sources for use by the firm or clients. | Yes, matches the description. |
| Data mining | The process of discovering patterns, trends, and insights within large data sets. It's a technique applied to data, not the collection itself. | No, it's a process, not the collection. |
| M.I.S (Management Information System) | A system that provides information to management for decision-making. It relies on data sources but the term refers to the entire system of people, processes, and technology, not just the data collection. | No, it's a system, not the collection itself. |
Understanding the Data Warehouse
A Data warehouse is specifically designed to pull together data from many different operational systems and external sources. This integrated data is then stored in a format optimized for querying and analysis, making it suitable for generating reports, performing analytical queries, and supporting decision-making within the firm or for providing services to clients. The key characteristics mentioned in the question — "enormous collection," "various internal and external sources," and "compiled by a firm for its own use or for use by its clients" — are the defining features of a data warehouse.
Based on the definitions and the characteristics described in the question, the term that accurately fits is Data warehouse.
Revision Table: Key Data Concepts
| Concept | Purpose | Relationship to Data |
|---|---|---|
| Data-base | Store and manage structured data for specific applications. | Organized storage. |
| Data warehouse | Consolidate data from multiple sources for analysis and reporting. | Large, integrated repository for analysis. |
| Data mining | Extract patterns and insights from data. | Process applied to data collections (like a data warehouse). |
| M.I.S | Provide information for management decision-making. | System using data from various sources. |
Additional Information on Data Warehousing
- ETL Process: Data is typically moved into a data warehouse using an Extract, Transform, Load (ETL) process, which cleans, transforms, and consolidates data from disparate sources.
- Subject-Oriented: Data warehouses are usually organized around major subjects of the enterprise (e.g., customers, products, sales) rather than the application processes.
- Non-volatile: Data in a data warehouse is not typically updated in real-time. New data is added, but historical data is generally stable.
- Time-Variant: Data in a data warehouse represents data over a period of time, allowing for historical analysis and trend identification.
Important Questions from Data Warehousing and Data Mining
Identify the correct statement(s) about Data Warehousing (DW):
A. DW system must be acceptable to regulators and business community.
B. DW system must not be based on open source platforms
C. DW system must present information attractive to users.
D. DW system must be secure bastion that protects the information.
E. DW system must be adaptive to change.
Choose the correct answer from the options given below:
What does the following statement represent in data migration?
"Locate the useful information required to populate the customer relationship management and identify who maintains it, what it contains and how accurate it is."
Match List - I with List - II.
List - I
Data Warehouse Types Concept
List - II
Functions Meaning of Data Ware Houses
(A)
Data Marts
I)
Provides a fairly recent form of customer information file and is used as interim staging area.
(B)
Operational Data Store
(II)
Provides integration of data from many sources into a standard format.
(C)
Enterprise Data Warehouse
(III)
Describe the structure and some meaning about data
(D)
Metadata
(IV)
Subset of a data warehouse, typically consisting of a single subject area
Choose the correct answer from the options given below:
- Considering the following statements:
A. Data transformation is involved in Datamining process.
B. Online database is used in Data warehouse.
C. Classification is a measure of accuracy.
D. K-means clustering algorithm is based on the concept of minimizing the within-cluster variance.
E. Pattern evaluation is a process to identify knowledge based on interestingness measure.
Choose the correct answer from the options given below: Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: OLAP systems are optimized for complex queries and analysis.
Reason R: OLTP systems are designed for transactions processing with large read-only queries.
In the light of the above statements, choose the most appropriate answer from the options given below
