President-elect Donald Trump completed his first presidential daily intelligence briefing on Tuesday, a senior Trump aide confirmed to Fox News.

The President's Daily Brief, or PDB, is like a highly classified newspaper containing the most authoritative and highly classified intelligence produced by the U.S. government for the president, and now the president-elect.

It is significantly different than the information provided in briefings for presidential candidates, Fox News reported last week. Those briefings act as primers to help bring candidates up to speed on topics like China, Iran and the Islamic State.

Candidates have been free to request additional briefs on topics of personal interest, and those supplemental briefings were made available to the other candidate.

The PDB is a focused intelligence product, and has a very high threshold for intelligence to be included.

Fox News’ Serafin Gomez, Carl Cameron, and Catherine Herridge contributed to this report.