University of Arkansas

Walton College

The Sam M. Walton College of Business

Sam's Club

Sam's Club, a division of Wal-Mart Stores, Inc., is a warehouse club that specializes in selling to small businesses. A membership-based store, Sam's Club offers goods and services for consumers and business owners as well as affordable luxury merchandise. Sam's Club keeps prices low by selling merchandise in bulk and at very low profit margins.

The Sam's Club Database contains retail sales information gathered from sales at Sam's Club stores. The process used to gather this information begins with a Sam's Club member gathering all of the items they intend to purchase during the current visit to Sam's Club. The member then proceeds to a register to check out. A Sam's Club associate scans the member's Sam's Club card, at which point a visit number (visit_nbr) is generated and stored in the store_visits table. The associate proceeds by scanning each item with a barcode reader. When all of the items have been scanned, summary information about each individual type of product (i.e. 6 packages of sop) purchased during that visit is recorded in the item_scan table. When payment is tendered for items purchased on that visit, summary information for the total order (transaction time & date, amount spent, number of unique items purchased, etc) is recorded in the store_visits table. Other tables are used to store information about stores, products, and members.

The retail sales information in the UA_SAMSCLUB database was provided to the Walton College of Business by Wal-Mart Stores, Inc. The database consists of 6 tables with more than 55 million rows populated and ready for use.

This is a gifted dataset that is based on real operational data. Like many real databases, integrity problems may be noted. This can provide a unique opportunity not only to expose students to real data but also to illustrate the effects of data integrity problems.

The UA_SAMSCLUB consists of six tables which include STORE_VISITS (Store vists by member), ITEM_SCAN (Information collected when item is scanned), STORE_INFORMATION (Information about store), MEMBER_INDEX (Member's information), ITEM_DESC (Item description), and SUB_CATEGORY_DESC (Item's secondary information).

ERD information can be downloaded here (secure login)

Metadata information can be downloaded here (secure login)

UA_SAMSCLUB contains sales transaction data for 18 Sam's Club stores between January 1 and January 31, 2000.

Store Number Total Scan Amount
15 $4,645,497.32
16 $3,083,055.10
17 $2,740,793.32
18 $7,308,252.08
19 $4,318,524.14
20 $3,578,099.28
21 $4,827,295.20
22 $4,067,987.80
23 $2,300,612.56
24 $4,436,103.32
25 $2,228,588.00
26 $3,297,646.04
27 $5,406,942.80
28 $3,652,925.70
29 $3,373,266.96
3 $2,346,091.54
4 $2,033,837.24
5 $3,362,084.26