CognitiveData Bought by Merkle by Arkansas Business Staff Posted 5/18/2009 07:20 am Updated 4 years ago Merkle Inc., a database marketing agency, has bought CognitiveData Inc. of Little Rock, a marketing technology company. Want the Full Article? Get Unlimited Archive Access for $19.95 per Year Readers must pay to access stories older than 20 days. Purchase Now Already have archive access? Login to view this article.