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In macroeconomics, the secondary sector of the economy is an economic sector in the three-sector theory that describes the role of manufacturing. It encompasses industries that produce a finished, usable product or are involved in construction .
Secondary market research can be broken up into two categories: information from internal sources such as an agency or company, and information from external sources held outside an organization or agency. [6] Secondary market research uses information from the past, reuses data already collected, and is more economical.
Scipione Amati's History of the Kingdom of Woxu (1615), an example of a secondary source. In scholarship, a secondary source [1] [2] is a document or recording that relates or discusses information originally presented elsewhere. A secondary source contrasts with a primary, or original, source of the information being discussed. A primary ...
Sources of information are commonly categorized as primary, secondary, or tertiary sources.In brief, a primary source is one close to the event with firsthand knowledge (for example, an eyewitness); a secondary source is at least one step removed (for example, a book about an event written by someone not involved in it); and a tertiary source is an encyclopaedia or textbook that provides a ...
Three sectors according to Fourastié Clark's sector model This figure illustrates the percentages of a country's economy made up by different sector. The figure illustrates that countries with higher levels of socio-economic development tend to have less of their economy made up of primary and secondary sectors and more emphasis in tertiary sectors.
Secondary sources may draw on primary sources and other secondary sources to create a general overview; or to make analytic or synthetic claims. [3] [4] Tertiary sources are publications such as encyclopedias or other compendia that sum up secondary and primary sources. For example, Wikipedia itself is a tertiary source.
Secondary sources often have a wider perspective since they will analyse many primary sources or seek to put a single primary source into a wider context. Particular examples of this, in scientific publishing, are synthesis reports and meta-analyses. These secondary publications are designed to take many primary publications into account ...
The fourth edition ("AGLC4") was released in November 2018, combining secondary source rules into a single chapter on 'General Rules for Citing Secondary Sources'; it allows for cross referencing, and more kinds of materials have rules added, including intellectual property materials, podcasts, online secondary material, forthcoming journal ...