Computer ScienceChapter 12: Using Queries in Access
Crosstab Queries
A crosstab summarises values across row and column headings for compact comparison.
Learning objectives
- Define and explain crosstab 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 crosstab summarises values across row and column headings for compact comparison.
Important terms
- Crosstab queries
- A crosstab summarises values across row and column headings for compact comparison.
- Crosstab
- A crosstab summarises values across row and column headings for compact comparison.
- queries
- A crosstab summarises values across row and column headings for compact comparison.
Overview
Learn the concept through terminology and working:
Terminology and Concept
Terminology: use Crosstab queries, Crosstab, queries precisely. Define each term before using it in an explanation, algorithm, program, or comparison.
Examples A crosstab summarises values across row and column headings for compact comparison.
Working and Application
Working method: first identify the input or starting state for crosstab 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 crosstab queries to a small school, home, or software problem and trace the result.
CONCEPT — What it means
A crosstab summarises values across row and column headings for compact comparison.
TERMINOLOGY — Words to use
Terminology: use Crosstab queries, Crosstab, queries 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 crosstab 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 crosstab queries to a small school, home, or software problem and trace the result.
In simple words
Do not memorise the name 'Crosstab queries' without explaining what information enters, what process occurs, and what result is produced.
Key points
- Crosstab queries
- Crosstab
- queries
Exam preparation
Exam Focus
Quick revision
Revision Zone
Review the key facts, formulas and checks before you move on.Crosstab Queries
Sticky Notes · Quick Revision
Concept
- A crosstab summarises values across row and column headings for compact comparison.
Terminology
- Terminology: use Crosstab queries, Crosstab, queries 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 crosstab 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 crosstab queries to a small school, home, or software problem and trace the result.
Common Mistake
- Do not memorise the name 'Crosstab 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 crosstab summarises values across row and column headings for compact comparison.
- Working method: first identify the input or starting state for crosstab 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 crosstab queries to a small school, home, or software problem and trace the result.
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