If you need to connect more than two datasets, what must be common for all of them?

Question

Accepted Answer

Each dataset must contain a variable having common data (ex: names of cities) to another variable in another dataset.

Answer

Each dataset has the same number of values inside a variable.

Answer

Each dataset contain a variable with numbers as data.

Answer

Each dataset include words as data in a variable, although this values does not match at both datasets.

Answer

NO ANSWER

Crowdly