Slack

question 30

Multiple Choice

Slack

• A) is the difference between the left and right sides of a constraint.
• B) is the amount by which the left side of a ≤ constraint is smaller than the right side.
• C) is the amount by which the left side of a ≥ constraint is larger than the right side.
• D) exists for each variable in a linear programming problem.

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Definitions:

Cube

In the context of data analysis, a multi-dimensional array of values, typically used to represent data in a structured form for analysis.

Flat

In the context of design, characterized by minimalistic aesthetics that avoid three-dimensional illusions, or in databases, referring to a structure where all data elements are stored in a single table.

Table Query

A request for data from a database table, which can specify criteria for selection of specific records.

Join Query

A query used to extract data that’s in two or more tables in a database.