8.1 · Lesson 6 of 7
Validation in code
Syllabus 8.1.4Syllabus 8.1.8
What this lesson covers
- Use totalling, counting and string handling
- Write maintainable programs
Key vocabulary
- Validation
- An automatic check that data is reasonable before it's accepted.
- Range check
- Makes sure a value is between set limits.
- Presence check
- Makes sure data has been entered.
- Length check
- Makes sure data has a set number of characters.
- Format check
- Makes sure data matches a set pattern.
- Type check
- Makes sure data is the right data type.
- Character check
- Makes sure a string doesn't contain unacceptable characters.
- Verification
- Checks data has been entered accurately, e.g. double entry.
Check your learning
- Quick check: 4 questions
- Key vocabulary test: 8 terms
- Activity 1: Validation checks · 8 questions
- Activity 2: Validation quiz · 8 questions
- Activity 3: Which check? · drag and drop