What is the Difference Between Dependent and Independent Data Stores? with Proper Definition and Brief Explanation

The main difference between dependent and independent data marts is that the dependent data marts fetch data from an already created data store while the independent data marts fetch data directly from an operational and/or external source.                  Dependent and Independent Data Stores

In short, a data warehouse is a system that helps analyze data, create reports, and visualize it to make business decisions. An organization has multiple data sources. Data warehouses collect this data and help analyze it for business insights. A data mart is a subset of data stored in a data warehouse. These data marts provide more security and data integrity. Furthermore, there are two types of data stores as dependent and independent data stores.

Key Areas Covered

1. What is Dependent Data Marts?
     – Definition, Functionality
2. What is Independent Data Marts?
     – Definition, Functionality
3. What is the difference between dependent and independent data warehouses?
     – Comparison of key differences

Key terms

Data Mart, Data Warehouse, Dependent Data Mart, Independent Data Marts

What are Dependent Data Marts?

A dependent data center obtains data from a data warehouse. Improve data centralization. Also, if one or more physical data marts need to be developed, it is possible to configure them as dependent data marts.

There are two approaches to consider when building a dependent data center. First, it is possible to build it in a way that the user can access both the data mart and the data warehouse as per the requirement. Second, the user can only get accessibility to handle the data in the data mart.

What are Independent Data Marts?

An independent data center does not get data from the central or main data store. Therefore, a standalone data center has no association with the main data warehouse or other data marts. Therefore, storing and performing analysis on each data mart is a separate task. Above all, this type of data mart is suitable for small groups or sections within an organization. 

                                                                  Figure 1: Data Marts

In addition to dependent and independent data marts, there is another data center called a hybrid data center. It combines inputs from sources other than the central data store. Requires minimal data cleanup. In addition, it supports large storage structures.

Difference Between Dependent and Independent Data Stores

Definition

A dependent data center is either a logical subset or a physical subset of a larger data warehouse. In contrast, a standalone data mart is a type of data mart that pulls data from different sources without using the central data warehouse. Thus, this explains the fundamental difference between dependent and independent data marts.

Data collection method

Dependent data stores get data from a central data store that has already been created. However, independent data warehouses obtain data directly from operational sources or external data sources, or both.

Functionality

Also, dependent data warehouses pull data by aggregating, constraining, and summarizing data from the data warehouse, while independent data warehouses pull data from multiple transaction systems in a subject area or department to meet specific business needs. Therefore, this is a major difference between dependent and independent data stores.

Confidence

Also, dependent data stores depend on the central data store while dependent data stores are independent data stores and do not depend on the central data store.

Security

Another difference between dependent and independent data stores is that independent data shares are more secure than dependent data shares.

Also, we can identify a difference between dependent and independent data stores based on control. Independent data flags have more control over their data than dependent data flags.

Conclusion

In short, a data mart is a subset of a data warehouse that focuses on a single functional area or organization. There are two types of data stores as dependent and independent data stores. The difference between dependent and independent data warehouses is that dependent data warehouses obtain data from an already created data warehouse, while independent data warehouses obtain data directly from an operational, external, or both source.

Reference:

1.”20 Data Marts.” Oracle8i Data Warehouse Guide, available here.
2. “Data Mart Tutorial: What is Data Mart, types and example”. Meet Guru99 – free training tutorials and video for IT courses, available here.
3. “Data Mart – Independent and Dependent Data Marts”. ZenTut, available here.

Courtesy image:

1.”Data Warehouse Feeding Data Mart” By Jerry vlntn at English Wikibooks – Transferred from en.wikibooks to Commons (Public Domain) via Commons Wikimedia

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