100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Data Management and Wrangling $7.99   Add to cart
Quickly navigate to
Preview
  2.  
  3. Columbus State University
  4.  
  5. BUSA 3315

Class notes

Data Management and Wrangling
 10 views  0 purchase

Chapter 2 on Data Management and Wrangling provides a comprehensive overview of essential concepts and processes crucial in handling data for effective business analytics. Here's a detailed summary: **Data Wrangling and Data Management:** Data wrangling encompasses the process of retrieving, cl...

[Show more]

Preview 1 out of 4  pages

Document information

  • May 27, 2024
  • 4
  • 2023/2024
  • Class notes
  • Professor blair
  • Module 2

Subjects

Connected book

book image

Book Title:

Author(s):

  • Edition:
  • ISBN:
  • Edition:

More summaries for

All for this textbook (4)

Written for

All documents for this subject (2)

Seller

avatar-seller
dashboardprincess

Content preview

Chapter 2 Data Management and Wrangling
21. Data Management
Data wrangling – the process of retrieving, cleansing, integrating, transforming, and enriching data to support subsequent data analysis
oObjectives
Improve data quality
Reducing the time and effort required to perform analytics
Helping reveal the true intelligence in the data
oThe inability to clean and organize big data is one of the primary barriers preventing organizations from taking full advantage of business analytics Data management – the process that an organization uses to acquire, organize, store, manipulate, and distribute data Database- a collection of data logically organized to enable easy retrieval, management, and distribution of data Relational database- one or more logically related data files, often called tables or relations oT wo-dimensional grid with rows (records or tuples) and columns (fields or attributes)
oColumns (Ex. Sex of a customer, price of a product) contain a characteristic of a physical object (product or places), event (business transactions), or person (customer, students)
oRecord- a collection of related columns, which represent an object, event, or person Database management system (DBMS) – a software application for defining, manipulating, and managing data in databases
Data Modeling: The Entity-Relationship Diagram
Data Modeling- the process of defining the structure of a database Entity-Relationship Diagram (ERD)- a graphical representation used to model the structure of the data Entity- a generalized category to represent persons, places, things, or events about which we want to store data in a database table
Instance- a single occurrence of an entity oIn most instances, represented as a record in a database table
Relationship- represents certain business facts or rules oOne-to-one (1:1)
Less common than the other two Ex. Describes a situation where each department can have only one manager, and each manager can only manage one department

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller dashboardprincess. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $7.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

73314 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$7.99
  • (0)
  Add to cart