The analysis of a commodity basket is a process of finding the most common patterns of purchases. It is produced by analyzing the transaction databases to identify combinations of products that connected among themselves. In other words, there is a detection of goods which existence influence in transaction on probability of emergence of other goods or their combination. The results obtained with the help of market basket analysis, allow optimizing a range of goods and supplies, placing them in the sales area, to increase sale volumes at the expense of the offer to customers of accompanying goods. For example, if as a result of the analysis, it is established, that the joint purchase of macaroni and ketchup is a typical pattern, having placed these goods on the same showcase, it is possible “to provoke” the buyer to their joint acquisition. On the basis of this analysis are formed the rules, which can be used for: *The increase in sales by formation of the corresponding calculation in sales area. *Determination of customer proportion, which are positive to innovations in their service. *Determination the profile of consumer. *The increase customer loyalty and reduce the risk of loss through offering them relevant products. *Detection of frauds.