What is the minimum of Reads necessary to validate the QUORUM when: N=4, W=2

Cassandra now belongs to

Link to each data type the corresponding example

Which of these sentences are true according to CQL?

Which of the following queries can be executed on a Cassandra database for the given statement?

CREATE TABLE Person (id INT, firstname VARCHAR, lastname VARCHAR,
birthdate DATE, interests SET<VARCHAR>, primary key (id));
CREATE INDEX person_birthdate ON Person (birthdate);

What is a Wide-Column-oriented store?

Which of this methods are adapted to sharding?

To which 3V property corresponds this characteristic?

"Data is produced continuously and rapidly"

How many mistakes this JSON document contains?

{ "name": "Smiley", "age": 20, {"phone": [null, "email": "[email protected]"], happy: "true"}, "names" : {"last" : 1,0 , "first : 5 } }