As per one and one only Metatron
Who is Archangel Metatron in Spiritual Teachings? 
Visions, dreams.....he is in charge of Akashic  reccords....where every Soul's life in the Universe that ever lived.....every thought each millisecond or less that takes for the thought processes to occur,  every intention, every feeling, every action of the past, present and future, including past life reccorded...
How could the database be so big??? To fit this much of information? What is it consist of?
Components must be super hyper dense matter or it expands with no limits....
Its probably beyond Human understanding.....till the time comes
And it is a God's technology, his invention 
His creation 
What about alternative realities? 
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