$1.$ In the context of Laney's $3$ Vs of Big Data databases, which term refers to the fact that data is collected in multiple data formats?

$2.$ a$.$ volume

b$.$ velocity

c$.$ vendor

d$.$ variety

$2.$ According to a standard data$-$modeling checklist, the non$-$key entities in an entity$-$relationship $($ER$)$ data model must be fully dependent on $\_\_\_\_\_.$

a$.$ passive verbs

b$.$ constraints

c$.$ the entity instance

d$.$ the primary key

$3$ Which of the following is an example of a primary key?

a$.$ Its constraint cannot be defined on the local or global temporary tables.

b$.$ More than one key is allowed in a table.

c$.$ Its value can be deleted from the child table.

d$.$ Its constraint can be implicitly defined on the temporary tables.

$4.$ The $\_\_\_\_\_\_\_\_\_$operator uses one single$-$column table $($e$.$g$.,$ column $"$a$")$ and one two$-$column table $($e$.$g$.,$ columns $"$a$"$ and $"$b$")..$

a$.$ DIVIDE

b$.$ SELECT

c$.$ PROJECT

d$.$ SPLIT

$5.$ At work you are asked to use a star schema that will help with searching a certain product for your boss. What attribute are using?

a$.$ sales

b$.$ tables

c$.$ dimensions

d$.$ facts

$6.$ If Postcard company needs a framework that is more comprehensive and integrated decision support what would their company choose?

a$.$ Business Intelligence

b$.$ Data Intelligence

c$.$ Data Analysis

d$.$ Business Analysis

$7.\_\_\_$ allows companies to support tasks that require more than one person to work on the task.

a$.$ Model Driven DSS

b$.$ Driven DSS

c$.$ A Communication$-$driven DSS

d$.$ Data Driven DSS

$8.$ An index is composed of an index key and pointers. What is the function of the pointers?

a$.$ Shows the location of the occurrences of a particular index value.

b$.$ Helps sort the index by points.

c$.$ Avoids creating more complex primary keys.

d$.$ Allow the creation of M:N relations in the database.

$9.$ By examining the $\_\_\_\_\_$ in a business rule, a database designer can identify the database as a collection of records in $1$:$1,1$:M$,$ or M:N relationships.

a$.$ verbs

b$.$ attributes

c$.$ nouns

d$.$ names