and product support revenues, hardware systems products revenues and hardware systems support revenues where such qualitative discussions would be meaningful for an understanding of the factors that influenced the changes in our results of operations. When material, we may also provide quantitative disclosures related to such acquired products. The contributions of our acquisitions to our other businesses and operating segments’ revenues and to the expense contributions for substantially all of our businesses and operating segments in each of the respective period comparisons are not provided as they either were not separately identifiable due to the integration of these businesses and operating segments into our existing operations and/or were insignificant to our results of operations during the periods presented.

We caution readers that, while pre- and post-acquisition comparisons, as well as any quantified amounts themselves, may provide indications of general trends, the acquisition information that we provide has inherent limitations for the following reasons:

 

 	•	 	any qualitative and quantitative disclosures cannot specifically address or quantify the substantial effects attributable to changes in business strategies, including our sales force integration efforts. We believe that if our acquired companies had operated independently and sales forces had not been integrated, the relative mix of products sold would have been different; and

 

 	•	 	although substantially all of our customers, including customers from acquired companies, renew their software license updates and product support contracts when the contracts are eligible for renewal and we strive to renew cloud SaaS and PaaS contracts and hardware systems support contracts, the amounts shown as cloud software-as-a-service and platform-as-a-service deferred revenues, software license updates and product support deferred revenues, and hardware systems support deferred revenues in our supplemental disclosure related to certain charges (presented below) are not necessarily indicative of revenue improvements we will achieve upon contract renewals to the extent customers do not renew.

Constant Currency Presentation

Our international operations have provided and will continue to provide a significant portion of our total revenues and expenses. As a result, total revenues and expenses will continue to be affected by changes in the U.S. Dollar against major international currencies. In order to provide a framework for assessing how our underlying businesses performed excluding the effect of foreign currency fluctuations, we compare the percent change in the results from one period to another period in this Annual Report using constant currency disclosure. To present this information, current and comparative prior period results for entities reporting in currencies other than U.S. Dollars are converted into U.S. Dollars at constant exchange rates (i.e., the rates in effect on May 31, 2013, which was the last day of our prior fiscal year) rather than the actual exchange rates in effect during the respective periods. For example, if an entity reporting in Euros had revenues of