Difference Between Primary And Secondary Data Brainly. A foreign key is a column or group of columns in a relational database table that provides a link between data in two tables. Primary data is a real-time data whereas secondary data is one which relates to the past.
Brainly User The difference between primary and second research collection is that primary research data collection involves conducting research oneself or using the data for the purpose it was intended for. Get the Brainly App. Secondary data is the data u attain from other sources.
Secondary data is the already.
Secondary data are not original because someone else has collected these for his own purpose. Primary sources are first-hand accounts of a topic while secondary sources are any account of something that is not a primary source. Key Differences Between Primary and Secondary Data. These sources are documents that relate to information that originated elsewhere.
