How Neo4j is distributed in a cluster?

In which format documents are stored in MongoDB?

Give for each concept, the corresponding role

What is $unwind used for?

What statements are FALSE in a MongoDB cluster?

{
 "title" : "Star Wars VIII: The last Jedi", 
 "plot": "Following the battle of Starkiller Base, General Leia Organa leads Resistance forces to flee D'Qar when a First Order fleet arrives. Poe Dameron leads a costly counterattack that destroys a First Order dreadnought, but after the Resistance escapes to hyperspace, the First Order tracks them and attacks the Resistance convoy. Kylo Ren, Leia's son, hesitates to fire on the lead Resistance ship after sensing his mother's presence, but his wing-men destroy the bridge, killing most of the Resistance leadership and incapacitating Leia, who survives by using the Force. Disapproving of new leader Vice Admiral Holdo's passive strategy, Poe helps Finn, BB-8, and mechanic Rose Tico embark on a secret mission to disable the First Order's tracking device.."
}

Which similarity measure is standard in a Search Engine?

Which characteristics correspond to the "Consistency" CAP property?

What is the name of the logging collection, used for updates?