Information management firm SDL said demand for its products remained stable as it updated the market on its first quarter performance.The firm said that both revenues and operating profit in the first three months of 2012 were in line with management expectations."We do not yet see broad based economic recovery but overall demand conditions are stable and our pipeline remains solid," SDL said in a statement. "We see variability across the different segments served, but the broad industry vertical mix of our customer base, combined with our geographic spread, continues to afford protection against economic uncertainty."The firm added that it was positive about its progress in integrating analytics firm Alterian.SDL bought the firm for £69.7m - or 110p per share - at the end of January. Alterian's software allows clients to monitor what their customers are interested in by analysing what they are looking at, and for how long.At the time SDL hailed the deal as "an excellent strategic fit", combining Alertian's marketing analytics, campaign management and social media capabilities with its own web content management, e-commerce and structured content products.