What is the adjective for this kind of presentation of data?

If you are looking for adjectives, I suggest "summarized", "brief", "concise" or "compact".

• summarize - to make a summary or make a summary of.

• "here you can see a summarized review of..."
• "please, prepare a summarized record of..."
• "I'm going to present a summarized overview of..."

Perhaps "itemised" , since the description of Jane has been "broken down into constituent parts". The properties or attributes which describe Jane have been itemised.

You can use the adjective "Tabulated" form. In a typical tabulated form, keys and values are used.

"Key" is the identifier for a "value" corresponding to it. In a tabulation, as in systematic data arranged through spreadsheets, keys are either implicit or explicit. In the example quoted in the question, "Age", "Name", "Occupation" etc. are keys, and "20", "Jane" etc. are the associated values. An advantage of data arranged in terms of keys and values is that many similar records can be handled uniformly.

One example web page on which the phrase "tabulated form" is used can be found here: https://www.mtt.org/tabulated-chapter-information