Zoe needs an open$-$source, distributed framework to provide an environment for high speed, parallel computation and storage using low$-$cost hardware as nodes in order to process Big Data. Which of the following would Zoe use? a$.$ XML b$.$ NoSQL c$.$ Hadoop d$.$ MapReduce $22.$ In the context of relational databases, a column in a relational table is associated with the $\_\_\_\_\_($s$)$ of a real$-$world person, place, thing, or event. a$.$ entity b$.$ attributes c$.$ relationships d$.$ constraints $23.$ A$($n$)\_\_\_\_\_$ represents a particular type of object in the real world. a$.$ attribute b$.$ entity c$.$ relationship d$.$ node $24.$ A$($n$)\_\_\_\_\_$ is the equivalent of a field in a file system. a$.$ attribute b$.$ entity c$.$ relationship d$.$ constraint $25.$ A$($n$)\_\_\_\_\_$ is bidirectional. a$.$ attribute b$.$ entity c$.$ relationship d$.$ constraint