The Purpose of an Index Is to ____.​

question 91

Multiple Choice

The purpose of an index is to ____.​

• A) ​speed up DML operations
• B) ​speed up full table scans
• C) ​efficiently determine whether a value exists in a table
• D) ​all of the above

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Definitions:

Regression Model

A statistical model that estimates the relationship between a dependent variable and one or more independent variables.

Regression Coefficients

Numeric values that represent the degree of change in the dependent variable expected for a one-unit change in one of the independent variables, holding other factors constant.

Correlated

When two or more variables or sets of data are related in some way, indicating a relationship or dependence between them.

Multicollinearity

A situation in multiple regression models where one predictor variable in the model can be linearly predicted from the others with a substantial degree of accuracy, leading to difficulties in determining the separate effects of predictor variables.