As you know, in August we announced the creation of three business units, OpenEdge, Data Connectivity and Integration or DCI and application development deployment or app dev. Each business unit president is responsible for the profitability of their respective unit and as a result of this realignment, we have adopted segment reporting for the three business units beginning in the 4th Quarter. We have included quarterly results of operation by segment for 2013 and 2014 in our earnings press release. Also the results of our Corticon products are included in the OpenEdge business unit.
For the 4th Quarter, revenue by business units on a constant currency basis – OpenEdge revenue was $87 million, an increase of 11% year over year including revenues related to our BravePoint acquisition; DCI revenue was $13 million, an increase of 5%, primarily due to an increase in our OEM revenue in EMEA; and app dev revenue was $400,000, an increase of 120% versus the prior year. As I’ll discuss shortly, we expect that the positive momentum we saw in each of our business units in Q-4 will continue in the 2015.
For the full year – OpenEdge revenue was $297 million, an increase of 1% due to growth in APJ and Latin America, as well as incremental services revenue as a result of the BravePoint acquisition; DCI revenue was $35 million, a decrease of 13% year over year, primarily in North America; and app dev revenue was $1 million, an increase of 160% versus the prior year. The full-year decrease in DCI revenue is primarily due to two factors, the upfront revenue recognition in 2013 on several large multi-year OEM renewals and also the weakness in our pipeline from earlier in the year, which impacted our revenue growth in the first three quarters of 2014. Our pipeline is getting stronger for this business unit, which is reflected in the Q-4 year over year growth in revenue of 5%.
For our 4th Quarter revenue by geography – North America was up 2%, compared to the same quarter a year ago and included incremental services revenue from BravePoint of $3 million. On a constant currency basis, EMEA was up 4%, APJ was up 69% and Latin America was up 37%. The increase in EMEA was primarily from our application partners, while the increase in Latin America was due to additional revenue from end users. The increase in APJ was due to a large multi-year deal with two affiliated OpenEdge end users that I mentioned earlier. For the full year, North America revenue was down 2% versus the prior year. On a constant currency basis, EMEA was down 4%, APJ was up 29% and Latin America was up 6%.
Non-GAAP operating margin in the 4th Quarter was 39%, two percentage points higher than the 4th Quarter of 2013. In the 4th Quarter, we generated strong cash flows with operating cash flow of approximately $39 million, compared to $18 million in Q-4 2013. Operating cash flow in Q-4 of last year included restructuring charges of approximately $7.2 million associated with our margin improvement initiatives and adjusting for these charges, operating cash flow for Q-4 2013 would have been approximately $25 million.
We also had a very strong cash flow performance for the full year. 2014 adjusted free cash flow was approximately $99 million, above the high-end of our guidance range. This represents a 35% increase over the $73 million generated in 2013. We did not repurchase any shares in the 4th Quarter. For the year, we repurchased $2.3 million shares at a cost of $53 million, as part of the 100 million share repurchase program authorized by our Board in January 2014. As of January 2015, we have $47 million remaining under this authorization.
The company ended the quarter with a strong balance sheet, with ending cash, cash equivalents and short-term investments of $283 million and no debt. Subsequent to our year-end, we funded the purchase of the Telerik acquisition using approximately $100 million of cash, with the remainder financed through a $150 million term loan, which is just part of a new five-year $300 million term and revolving credit facility. The interest rate on the term loan is based on libor, plus a margin determine by our consolidated leverage ratio. Based on our current leverage ratio and the current libor levels, our effective annual interest rate is libor plus 1.75% or approximately 2%.
