The Identifier column is the primary text string assumed to identify the tuple on the Web; optionally, the Secondary Identifiers column is an additional disjunctive search expression that is useful for identifying the tuple.
This information is supported by "secondary identifiers" such as marks, scars and tattoos, in addition to supporting information such as clothing, jewellery and circumstantial evidence.
For example, among the Stanford DBGroup members, "Jeff Ullman" is the primary identifier, and "Jeffrey Ullman" or "Jeffrey D. Ullman" or "Jeff D. Ullman" is the expression that constitutes the Secondary Identifiers.
Secondary identifiers (GSS#) were formed from each clone name appended with a number indicating its membership in sequence assembly A3 (see below).
In addition, our system was used to process articles in PubMed Central, predicting that a total of 52 932 articles report data deposition, many of which are not currently included in the Secondary Source Identifier [si] field for MEDLINE citations.
This study used secondary data without personal identifier, for which no informed consent is necessary.
This group was established by the Scottish Chief Medical Officer to advise Scottish Directors of Public Health on the appropriate use of the NHS Scotland unique personal identifier for secondary purposes.
The methodology of Neubauer et al. is a very innovative concept to control authentication, authorization and access to medical data and provides perfect privacy, but lacks an unambiguous pseudonymization transformation of a patient identifier for secondary use.
Its Internet keyword system, which is used by search engines and web browsers, won't replace domain names and their corresponding Uniform Resource Locators (URL), but it will turn them into secondary rather than primary identifiers.
We analyzed a secondary dataset with no identifiers and the study was granted with a consent form waiver by the CEP/ENSP.
