The Maintenance and Evolution Phase of the Database Life Cycle

question 2

Multiple Choice

The maintenance and evolution phase of the Database Life Cycle (DBLC) involves _____.

• A) defining objectives
• B) introducing changes
• C) testing the database
• D) installing the DBMS

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Definitions:

Simple Random Samples

A subset of a statistical population in which each member has an equal chance of being chosen, ensuring unbiased representation.

SPSS Output

The results generated by the Statistical Package for the Social Sciences, displaying statistical analysis, tables, charts, and tests performed on data.

Chi-square Statistic

A statistical test used to compare observed data with data we would expect to obtain according to a specific hypothesis.

Significance Level

A threshold in hypothesis testing that determines the probability of rejecting the null hypothesis when it is actually true, often denoted by alpha (α).