Correlations and subrelations are both valuable breakdown functions in the Adobe Marketing Cloud, however each have their own advantages when used in reporting.
Correlations: Grants the ability to break down traffic variables by another.
Subrelations: Grants the ability to break down conversion variables by another.
Variables: Correlations are only allowed on traffic variables, while subrelations are only allowed on conversion variables.
- Variables that can be both correlated and subrelated:
- Page Names and Site Sections
- Several Traffic Sources, including referring domain, search engines, and search keywords
- Many visitor profile reports, including languages, domains, browsers, operating systems, and monitor resolution
- Variables only allowed in correlations:
- All custom traffic variables
- Custom links, download links, and exit links
- Referrer and Referrer type
- Geosegmentation variables, including city, country, DMA, and region
- Mobile devices
- All individual hierarchy levels across all s.hier variables
- Many legacy video variables, including video name, video player, and video host
- Variables only available with basic subrelations on SiteCatalyst 14:
- Customer Loyalty
- All fully subrelated eVars
- Variables only available with full subrelations and on all conversion variables in SiteCatalyst 15:
- All variables listed under basic subrelations
- Time Spent per Visit
- Entry Pages
- Original referring domains
- Visit Number
- ZIP Code
- Marketing Channel first and last touch
Metrics: Page views is the only metric available in a correlated report. All conversion events are available in subrelated reports, as well as Visits and Visitors if its subrelation setting is enabled.
Relationship: In order for correlations to work, the two traffic variables must occur on the same image request. In order for subrelations to work, the breakdown variable and conversion event can fire in any subsequent image request prior to its expiration.
Enabled size: Correlations can be enabled in groups of 2, 5 or 20, where any traffic variable can be used. Subrelations are based on basic or full subrelations, where a specific set of breakdowns are enabled for each. Custom subrelations are also available that can be enabled for all eVars with basic subrelations.
Enabled table conflicts: It is possible to create two correlations that overlap eachother, and only one table at a time is used in reporting. It is not possible to create overlapping subrelations or data table conflicts with eVars.