Let X₁ , X₂ , and X₃ Be 0 -

question 26

Multiple Choice

Let x₁ , x₂ , and x₃ be 0 - 1 variables whose values indicate whether the projects are not done (0) or are done (1) . Which answer below indicates that at least two of the projects must be done?

• A) x₁ + x₂ + x₃ ≥ 2
• B) x₁ + x₂ + x₃ ≤ 2
• C) x₁ + x₂ + x₃ = 2
• D) x₁ − x₂ = 0

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Definitions:

Table Design

An aspect of database management that involves specifying the structure, relationships, and constraints of data stored in tables.

Caption Property

A property used in database management and user interfaces to provide a readable label or title for an object, field, or control.

Query Datasheet

A view that displays the results of a database query in a grid-like format, similar to a table or spreadsheet.

Query Design

The planning and creation process of queries in databases or search engines to retrieve specific data based on certain criteria or conditions.