Computer ScienceChapter 12: Using Queries in Access
Purpose of Queries
A query asks the database for selected fields and records, calculated results, summaries, or controlled changes.
Learning objectives
- Define and explain purpose of queries in clear language.
- Use the important technical terms accurately.
- Describe the working process in the correct order.
- Apply the concept to a realistic computing example.
- Test or evaluate the result and state a limitation.
Definition
A query asks the database for selected fields and records, calculated results, summaries, or controlled changes.
Important terms
- Purpose of queries
- A query asks the database for selected fields and records, calculated results, summaries, or controlled changes.
- Purpose
- A query asks the database for selected fields and records, calculated results, summaries, or controlled changes.
- queries
- A query asks the database for selected fields and records, calculated results, summaries, or controlled changes.
- calculated results
- A query asks the database for selected fields and records, calculated results, summaries, or controlled changes.
- or controlled changes.
- A query asks the database for selected fields and records, calculated results, summaries, or controlled changes.
Overview
Learn the concept through terminology and working:
Terminology and Concept
Terminology: use Purpose of queries, Purpose, queries, calculated results precisely. Define each term before using it in an explanation, algorithm, program, or comparison.
Examples A query asks the database for selected fields and records, calculated results, summaries, or controlled changes.
Working and Application
Working method: first identify the input or starting state for purpose of queries; then apply the rule or process in a clear order; finally inspect the output, test an edge case, and explain any limitation.
Examples Example: apply purpose of queries to a small school, home, or software problem and trace the result.
CONCEPT — What it means
A query asks the database for selected fields and records, calculated results, summaries, or controlled changes.
TERMINOLOGY — Words to use
Terminology: use Purpose of queries, Purpose, queries, calculated results precisely. Define each term before using it in an explanation, algorithm, program, or comparison.
WORKING — How it operates
Working method: first identify the input or starting state for purpose of queries; then apply the rule or process in a clear order; finally inspect the output, test an edge case, and explain any limitation.
EXAMPLE — Apply it
Example: apply purpose of queries to a small school, home, or software problem and trace the result.
In simple words
Do not memorise the name 'Purpose of queries' without explaining what information enters, what process occurs, and what result is produced.
Key points
- Purpose of queries
- Purpose
- queries
- calculated results
Exam preparation
Exam Focus
Quick revision
Revision Zone
Review the key facts, formulas and checks before you move on.Purpose of Queries
Sticky Notes · Quick Revision
Concept
- A query asks the database for selected fields and records, calculated results, summaries, or controlled changes.
Terminology
- Terminology: use Purpose of queries, Purpose, queries, calculated results precisely. Define each term before using it in an explanation, algorithm, program, or comparison.
Working
- Working method: first identify the input or starting state for purpose of queries; then apply the rule or process in a clear order; finally inspect the output, test an edge case, and explain any limitation.
Example
- Example: apply purpose of queries to a small school, home, or software problem and trace the result.
Common Mistake
- Do not memorise the name 'Purpose of queries' without explaining what information enters, what process occurs, and what result is produced.
Exam Tip
- Define the concept, name its parts, explain the working in order, then add and trace one correct example.
60-second revision
- A query asks the database for selected fields and records, calculated results, summaries, or controlled changes.
- Working method: first identify the input or starting state for purpose of queries; then apply the rule or process in a clear order; finally inspect the output, test an edge case, and explain any limitation.
- Example: apply purpose of queries to a small school, home, or software problem and trace the result.
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