1. A system for associating data records, comprising: one or more information sources; a master entity index system operable for: receiving a data record from an information source; identifying an entity type associated with the data record; identifying a set of candidate data records for associated with the entity types, where each of the set of candidate data records is based on a comparison between a set of existing data records and the received data record; scoring each of the set of candidate data records, wherein a score generated for each of the candidate data records corresponds to a likelihood that the first data record and the candidate data record comprise information on a first entity of the entity type; and associating the received data record and a first candidate record of the set of candidate record with the first entity of the entity type if the score associated with the first candidate record is greater than a first threshold; and an interface for use with the master entity index system operable to: search for the first entity using one or more search criteria; display a first entity representation corresponding to the first entity; display a second entity representations representing a second entity having a relationship with the first entity; and display a relationship representation representing the relationship between the first entity and the second entity.