Support- the frequency of an itemset appearing. In other words, it is how many times one group occurs in the data.
Confidence- the strength of the association. If there are two itemsets named X and Y, he […]

The website, Spotcrime.com, is an example of an OLAP system. It supports operations research activities. You are able to view the locations of where different crimes have occurred recently. It also provides […]

Clustering can be used in many different fields. In marketing, it can be used to discover distinct customer groups for targeted promotions. For healthcare, it is used when finding patients with behaviors that […]

2.) What data would be valuable to electoral candidates?
The Obama 2012- Are You In? app is giving the campaing invaluable data such as “name, gender, birthday, current city, religion and political views. As […]

ALTER is a DDL (Data Definition Language) command. The ALTER commands are Alter Database, which is to modify a database. Another command is Alter Table which means to modify a table. INSERT is a DML (Data […]

To resolve a M:N (many to many) relationship, you should try to change it to a one to many relationship. This can be done by creating another entity table, for example orders and products. instead of having many […]

We gather requirements in order to build a solution. A common way of doing this is by interview. There are three types of interviews. The first being, One-on-One interview. You sit down with a person and ask […]