>What do you have from the healthcare part now? Drugs, diagnosis, lab test (from the like of labcorps), or just point of sale addresses because hipaa? Nothing.

>What do you have from the healthcare part now? Drugs, diagnosis, lab test (from the like of labcorps), or just point of sale addresses because hipaa? Nothing. The data at issue in this article belongs to a category called "Non-FCRA" (Fair Credit Reporting Act), which means they cannot (really, are not supposed to) be used for things like credit and hiring decisions. Most of the data are from the public domain, although there are some data that are only quasi-public (meaning they're nominally public but you must have special privileges to see them). I haven't seen any truly non-public data. >How is the data linked? ssn, phone numbers? (just a best guess, in case you spotted some linking anomalies) ?Is the primary key still a number internal to lexis nexis? The primary key is an internal UID, where each person has his/her own. There are edge cases where people in their DB do not have UID's at all or where a single person has multiple UID's. They obviously have some linking but I've seen little indication that they have a robust graph under the hood. For example, Lexis may "know" that you've cohabitated with a member of the opposite sex about the same age as you for 10 years starting when you were 30, and also "know" that you're married to someone with the same name as the cohabitant, but fail to identify that person as your spouse because the marriage records are siloed in their back end. >How detailed is the social network now? (just people living together and neighbours, or does it includes relatives and family members) There are lots of data available on your relatives and family members, but again, the linkages are piss-poor. For example, your record may say that your name is "John Smith Jr." and you lived with a man who is 30 years older than you named "John Smith Sr." until you were 18, but fail to identify that person as your father.