What is true of archival data? Archival data are a valuable supplement to more traditional data collection methods. Archival data provides the most accurate information for researchers. The use of archival data does not allow researchers to study interesting questions. The advantage of archival data is that the desired records can be easily obtained.

The correct answer is Archival data are a valuable supplement to more traditional data collection methods.

Explanation:  In a database there can be one or more data files. An oracle database is a data set. The server stores data in a database and retrieves related information from the database. The information is stored in files or storage structures in a database.

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answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

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answer; earthquake;